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RS485 Temperature Humidity Sensor Transmitter, SHT40 Metal Waterproof Probe, -40C to 120C 0-100%RH Modbus-RTU Real-Time Monitor RS485 Temperature Humidity Sensor Transmitter, SHT40 Metal Waterproof Probe, -40C to 120C 0-100%RH Modbus-RTU Real-Time Monitor 1.Description:    XY-MD04 is a temperature humidity sensor probe made of metal material with built-in SHT40 sensor. By using the RS485 interface and MODBUS communication protocol, the measured temperature and parameter values... $7.69
$10.99
SKU: GY21250-1
$7.69
$10.99

31

RS485 Temperature Humidity Sensor Transmitter, SHT40 PE Waterproof Probe,  -40C to 80C 0-100%RH Modbus-RTU Real-Time Monitor RS485 Temperature Humidity Sensor Transmitter, SHT40 PE Waterproof Probe, -40C to 80C 0-100%RH Modbus-RTU Real-Time Monitor 1.Description: XY-MD03 is a temperature humidity sensor probe made of PE material with built-in SHT40 sensor. By using the RS485 interface and MODBUS communication protocol, the measured temperature and parameter values are read throug... $5.85
$8.35
SKU: GY21249-1
$5.85
$8.35

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Arithmetic Calculator DIY Kit, LCD1062 Display Color Ring Resistance Calculator, Multi-Functional Calculator Electronic Soldering Kit Arithmetic Calculator DIY Kit, LCD1062 Display Color Ring Resistance Calculator, Multi-Functional Calculator Electronic Soldering Kit 1.Introduction:   CAI-150 is Multi-functional Calculator Electronic Soldering DIY Kit. It is powered by two CR2032 button batteries, integrates five different computing functions, and uses a traditional LCD1602 display screen to d... $11.89
$16.99
SKU: GY21239-1
$11.89
$16.99

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3PCS Five-Pointed Star Breathing Light DIY Kit, SMD 0805 Soldering Practice Kit 3PCS Five-Pointed Star Breathing Light DIY Kit, SMD 0805 Soldering Practice Kit 1.Introduction:     PBL-20S is a Five-Pointed Star Breathing Light DIY Kit. It is a simple breathing light and Its brightness automatically fades.   2.Feature:     1>.20pcs highlight LED &n... $6.99
$9.99
SKU: GY18740
$6.99
$9.99

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Coulometer Lead-acid Battery Voltage Monitor, Battery Capacity Monitor, 30A Charge/Discharge Controller 6V-60V LCD Display Coulometer Lead-acid Battery Voltage Monitor, Battery Capacity Monitor, 30A Charge/Discharge Controller 6V-60V LCD Display 1.Description: ZK-J30 is a high-precision current acquisition type battery meter, also known as a coulomb meter with 30A relay switch control output. It can display the real-time capacity and charging/discharging time of the battery in... $11.19
$15.99
SKU: GY21224-1
$11.19
$15.99

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WIFI High Temperature Controller APP Remote Control K-type Thermocouple -99~999C LCD Display 10A Relay Switch Controller WIFI High Temperature Controller APP Remote Control K-type Thermocouple -99~999C LCD Display 10A Relay Switch Controller 1.Description: XY-WT04-W is a wireless WIFI K-type digital high temperature controller module with APP Sinilink control. It can be widely used at smart home,Industrial control, Automatic irrigation, Indoor ventilation. Protection equip... $13.29
$18.99
SKU: GY21223-1
$13.29
$18.99

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High Temperature Controller K-type Thermocouple -99~999C LCD Display 10A Relay Switch Controller High Temperature Controller K-type Thermocouple -99~999C LCD Display 10A Relay Switch Controller 1.Description: XY-WT04 is a K-type digital high temperature controller module. It can be widely used at smart home, Industrial control, Automatic irrigation, Indoor ventilation. XY-WT04 high temperature control module has high pre... $8.75
$12.50
SKU: GY21222-1
$8.75
$12.50

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DC 12V 24V 30W TWS Bluetooth-compatiable Amplifier Audio Module Mono AUX/U-disk Music Player DC 12V 24V 30W TWS Bluetooth-compatiable Amplifier Audio Module Mono AUX/U-disk Music Player 1.Description: ZK-301B is a DC 12V 24V 30W TWS Bluetooth Amplifier Audio Module, perfect for DIY wireless Bluetooth speakers and transponders. It can receive Bluetooth music, as well as AUX/USB audio input. It also features a unique TW... $6.99
$9.99
SKU: GY21171-1
$6.99
$9.99

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MB1040 645cm Range Finder Transceiver, Ultrasonic Ranging Sensor Module Distance Tester for Drones/Robots MB1040 645cm Range Finder Transceiver, Ultrasonic Ranging Sensor Module Distance Tester for Drones/Robots 1.Description:  The Ultrasonic Ranging Sensor Module is a product used to measure distance by sending and receiving ultrasonic waves, and then using the value of measured time and the velocity of sound works out the distance of th... $9.09
$12.99
SKU: GY21172-1
$9.09
$12.99

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Simulated TDS Sensor Water Conductivity Sensor Water Quality Tester for UNO/Mega2560 Simulated TDS Sensor Water Conductivity Sensor Water Quality Tester for UNO/Mega2560 1.Description:  The Water Conductivity Sensor can be used to measure water quality in daily life. In general, the TDS of running water is within 100, and the pure water is within 10. 2.Feature:  1>.It can realize th... $6.29
$8.99
SKU: GY21176-1
$6.29
$8.99

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DC 12V 24V 36V Trigger Counter Module 5-Bit 0.56in Red Digital Tube Display DC 12V 24V 36V Trigger Counter Module 5-Bit 0.56in Red Digital Tube Display 1.Description:   QF-C05 is a trigger counter. Each time press "+1" button, the calculator adds one. And each time press "-1" button, the calculator subtracts one. Returns 0 when press and hold the "-1"... $5.15
$7.35
SKU: GY21161-1
$5.15
$7.35

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DC3.7V-120V Lead-acid Battery Voltage Monitor, Lithium Battery Charge Discharge Controller Protection Board DC3.7V-120V Lead-acid Battery Voltage Monitor, Lithium Battery Charge Discharge Controller Protection Board 1.Description:  The battery control charging module is a module that controls the power supply of the charger. It can realize automatic power off after the battery voltage exceeds the preset value. 2.Feature:  1>.Su... $5.25
$7.50
SKU: GY21163-1
$5.25
$7.50

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DC6V-120V 30A Lead-acid Battery Voltage Monitor, Lithium Battery Charge Discharge Controller Protection Board DC6V-120V 30A Lead-acid Battery Voltage Monitor, Lithium Battery Charge Discharge Controller Protection Board 1.Description:  The battery charging control module is a module that controls the power supply of the charger. It can realize automatic power off after the battery voltage exceeds the preset value. 2.Feature:  1>.Su... $6.65
$9.50
SKU: GY21162-1
$6.65
$9.50

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DIY Adjustable PWM Signal Generator, Voltage Current Temperature Tester Electronics Kit, Multifunctional LED Meter Soldering Kits for School Learning DIY Adjustable PWM Signal Generator, Voltage Current Temperature Tester Electronics Kit, Multifunctional LED Meter Soldering Kits for School Learning Introduction: 【 All in one Experiment DIY Kit 】The multifunctional soldering kit can measure voltage and current, temperature, logic level, circuit on-off, signal frequency and duty cycle, etc. It can also act as a PWM adjustable signa... $11.19
$15.99
SKU: GY21145-1
$11.19
$15.99

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4Bit Optocoupler Isolator 5V to 24V Level Voltage Converter Board PLC Signal with DIN Rail 4Bit Optocoupler Isolator 5V to 24V Level Voltage Converter Board PLC Signal with DIN Rail Parameter: Conversion frequency:20KHZ.   Application: 1. It can be used for signal isolation 2. PLC signal level converting 3. PNP/NPN signal to NPN signal 4. Signal level voltage converter   ... $5.45
$7.79
SKU: GY21221-1
$5.45
$7.79

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LED Musical Christmas Snowman Kit, DIY Snowman Music Box with RGB LED Automatic Flicker Light, Soldering Projects for Xmas Gifts Ideas LED Musical Christmas Snowman Kit, DIY Snowman Music Box with RGB LED Automatic Flicker Light, Soldering Projects for Xmas Gifts Ideas 1.Introduction: It is designed into ten different Christmas snowman cute cartoon characters, each Christmas snowman middle character is combined into "CHRISTMAS!", and there is a full color LED behind, with 14 full color LED ... $7.69
$10.99
SKU: GY21190-1
$7.69
$10.99

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DIY Kit Automatic Flicker Acrylic 3D Christmas Tree with Gardient Full Color LED Lights, Simple Xmas Tree Kits DIY Soldering Projects DIY Kit Automatic Flicker Acrylic 3D Christmas Tree with Gardient Full Color LED Lights, Simple Xmas Tree Kits DIY Soldering Projects 1.Introduction: This acrylic Christmas tree is a cool DIY project for the holiday decoration. It's a very simple making kit and also has a variety of LED color gradient modes. It has two Christmas trees above and each Christmas tre... $8.39
$11.99
SKU: GY21189-1
$8.39
$11.99

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30W+30W Treble Bass Bluetooth-compatiable Amplifier Board, BLE5.1 Audio Amp 2.0 Stereo APP Control for DIY Wireless Speakers 30W+30W Treble Bass Bluetooth-compatiable Amplifier Board, BLE5.1 Audio Amp 2.0 Stereo APP Control for DIY Wireless Speakers 1.Description:   XY-T30L is a high-power 30W+30W Stereo Bluetooth 5.1 Audio Amplifier Module with adjustable treble/bass which also can be controlled by APP Sinilink.   It can modify the Bluetooth name and password, also... $9.79
$13.99
SKU: GY21170-1
$9.79
$13.99

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15W+15W Treble Bass Bluetooth-Compatiable Amplifier Board, BLE5.1 Audio Amp 2.0 Stereo APP Control for DIY Wireless Speakers 15W+15W Treble Bass Bluetooth-Compatiable Amplifier Board, BLE5.1 Audio Amp 2.0 Stereo APP Control for DIY Wireless Speakers 1.Description:   XY-T15H is a 15W+15W Stereo Bluetooth 5.1 Audio Amplifier Module with adjustable treble/bass which also can be controlled by APP Sinilink.   It can modify the Bluetooth name and password, also can turn ON/O... $8.81
$12.59
SKU: GY21169-1
$8.81
$12.59

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DC-DC Adjustable Buck Boost Power Supply Module with Fan, 80W 5A Solar Charging Module, LCD Display CVCC Step UP Step Down Voltage Converter 6-36V to 0.6-36V DC-DC Adjustable Buck Boost Power Supply Module with Fan, 80W 5A Solar Charging Module, LCD Display CVCC Step UP Step Down Voltage Converter 6-36V to 0.6-36V 1.Description:   XY-SK80H is a DC-DC 80W 5A CVCC Adjustable Automatic Buck Boost Power Supply Module with a new generation of larger LCD display screen. It is a non-isolated converter which supports solar charging. It can convert ... $11.19
$15.99
SKU: GY21167-1
$11.19
$15.99

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Lossless HIFI 5.1 Bluetooth-Compatiable Audio U-Disk Decoder, DC5V Audio Receiver for DIY Speakers, Support App Remote Control Lossless HIFI 5.1 Bluetooth-Compatiable Audio U-Disk Decoder, DC5V Audio Receiver for DIY Speakers, Support App Remote Control 1.Description:   ZK-PT2 is a Bluetooth Audio Receiver MP3 Lossless Decoder which perfect for DIY wireless Bluetooth speakers and transponders. This module can receive Bluetooth music, as well as AUX/USB audio input.   Thi... $9.09
$12.99
SKU: GY21168-1
$9.09
$12.99

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FLASH 24/25 Programmer, SPI USB Automatic Programming Microcontroller for 256M/512M 24/25 Series FLASH FLASH 24/25 Programmer, SPI USB Automatic Programming Microcontroller for 256M/512M 24/25 Series FLASH 1.Description:    It is a FLASH 24/25 Programmer SPI USB Automatic Programming Microcontroller for 256M/512M 24/25 Series FLASH. 2.Feature:   1>.Drive free, offline replication   2>.Automatically iden... $7.69
$10.99
SKU: GY20845-1
$7.69
$10.99

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Battery Charge Controller, DC 1V-120V Battery Voltage Monitor Protector Lithium/Lead-Acid Battery Tester Battery Charge Controller, DC 1V-120V Battery Voltage Monitor Protector Lithium/Lead-Acid Battery Tester 1.Description:    It is a Battery Charge Controller DC 1V-120V Battery Voltage Monitor Protector Lithium/Lead-Acid Battery Tester. 2.Feature:   1>.Protect the battery from overcharge   2>.Start voltag... $9.09
$12.99
SKU: GY20772-1
$9.09
$12.99

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DC 12-36V 500W Brushless Motor Drive Controller Board, Hall BLDC Motor Control Driver Board DC 12-36V 500W Brushless Motor Drive Controller Board, Hall BLDC Motor Control Driver Board 1.Description:     It is a DC 12-36V 500W Brushless Motor Drive Controller Board with Hall Motor Balanced Vehicle Drive. 2.Parameter:   1>.Operating Voltage: DC 12V-36V   2>.Operating Current: &l... $11.19
$15.99
SKU: GY21056-1
$11.19
$15.99

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SW3518 USB Charging Module for QC4.0/3.0 SCP FCP PD VOOC USB Charger SW3518 USB Charging Module for QC4.0/3.0 SCP FCP PD VOOC USB Charger 1.Description:  The USB Charging Module is a dual-port charging chip that supports a variety of quick charging protocols, including PPS, PD, QC, AFC, FCP, SCP, PE, SFCP, VOOC. It not only supports quick charging for A+C port arbit... $5.59
$7.99
SKU: GY21142-1
$5.59
$7.99

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50W+50W HIFI Bluetooth-Compatible Amplifier Board, BLE5.1 Dual Channel Stereo Audio Amplifier, Support U-disk/AUX Audio APP/Infrared Remote Control 50W+50W HIFI Bluetooth-Compatible Amplifier Board, BLE5.1 Dual Channel Stereo Audio Amplifier, Support U-disk/AUX Audio APP/Infrared Remote Control 1.Description:   XY-Y50L is a high-power 50W+50W HIFI Stereo Bluetooth5.1 Audio Amplifier Module which also can be controlled by APP Sinilink and remote controller. It can modify the Bluetooth name and password, also can turn ON/O... $9.09
$12.99
SKU: GY21107-1
$9.09
$12.99

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IP6505 4USB Charging Module for QC2.0 QC3.0 FCP AFC USB Charger IP6505 4USB Charging Module for QC2.0 QC3.0 FCP AFC USB Charger 1.Description:  The charging module can quickly charge other devices, it supports a variety of quick charge. 2.Feature:  1>.It supports BC1.2 and Apple protocols.  2>.It supports Huawei fast charging proto... $5.78
$8.25
SKU: GY21141-1
$5.78
$8.25

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DC 12V 3A 4Pin PWM Fan Speed Control Module Automatic Temperature Controller NTC Sensor for 3000mA Fan DC 12V 3A 4Pin PWM Fan Speed Control Module Automatic Temperature Controller NTC Sensor for 3000mA Fan 1.Description:   Fan speed control module automatic temperature controller can automatically adjust the speed of fan according to the actual temperature. When the temperature is too low, it can made the fan stop running. 2.Fe... $6.20
$8.85
SKU: GY21116-1
$6.20
$8.85

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100W+100W TDA7498 High Power Amplifier, DC 12V~36V Dual Chanel HIFI Digital Audio Amplifier Board 100Wx2 100W+100W TDA7498 High Power Amplifier, DC 12V~36V Dual Chanel HIFI Digital Audio Amplifier Board 100Wx2 1.Description:  An audio amplifier board is a gadget used to amplify sound or input weak signals.   2.Feature:  1>.Gain selection.  2>.Aluminium alloys heat sink.  3>.Chip inductors.  ... $11.89
$16.99
SKU: GY21117-1
$11.89
$16.99

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DC8V-60V Battery Voltage Monitor, Lithium Battery Undervoltage Protector Discharge Controller Protection Board DC8V-60V Battery Voltage Monitor, Lithium Battery Undervoltage Protector Discharge Controller Protection Board 1.Description:  It is a battery discharge monitor. It can be used for discharge safety protection of various accumulators and lithium batteries. It can effectively protect the battery from over-discharge, thus affecting the servic... $11.19
$15.99
SKU: GY21138-1
$11.19
$15.99

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DC 3.3V 1.5inch IPS TFT LCD Display Module with RGB 240x280 Resolution NV3030B Driver SPI Interface DC 3.3V 1.5inch IPS TFT LCD Display Module with RGB 240x280 Resolution NV3030B Driver SPI Interface 1.Description:  It is a high-definition 1.5 inch TFT LCD liquid crystal display module.Its driver chip is NV3030B and SPI output. 2.Feature:  1>.TFT LCD display.  2>.High Definition.  3>.Ultra sm... $5.59
$7.99
SKU: GY21137-1
$5.59
$7.99

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DC 5V Fan Speed Control Module, Automatic Temperature Controller NTC Sensor for 500mA Fan DC 5V Fan Speed Control Module, Automatic Temperature Controller NTC Sensor for 500mA Fan 1.Description:  The intelligent fan temperature controller is used for adjusting the fan speed according to the actual temperature. 2.Feature:  1>.Automatic recognition of positive and negative poles.  2>.... $5.15
$7.35
SKU: GY21115-1
$5.15
$7.35

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15W+15W HIFI Bluetooth-compatible Amplifier Board, BLE 5.1 Stereo Audio Amp, U-disk/AUX Audio APP/Infrared Remote Control 15W+15W HIFI Bluetooth-compatible Amplifier Board, BLE 5.1 Stereo Audio Amp, U-disk/AUX Audio APP/Infrared Remote Control                               XY-Y15H 15W+15W HIFI Stereo Bluetooth 5.1 Amplifier Module 1... $8.39
$11.99
SKU: GY21114-1
$8.39
$11.99

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50W+50W HIFI Bluetooth-Compatible Amplifier Board, TPA3116 BLE5.1 Stereo Audio Amp, APP/Infrared Remote Control 50W+50W HIFI Bluetooth-Compatible Amplifier Board, TPA3116 BLE5.1 Stereo Audio Amp, APP/Infrared Remote Control                                  XY-Y50H 50W+50W HIFI Stereo Bluetooth 5.1 Au... $9.35
$13.35
SKU: GY21113-1
$9.35
$13.35

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30W+30W HIFI Bluetooth-compatible Amplifier Board, TPA3118 BLE 5.1 Stereo Audio Amp, APP/Infrared Remote Control 30W+30W HIFI Bluetooth-compatible Amplifier Board, TPA3118 BLE 5.1 Stereo Audio Amp, APP/Infrared Remote Control                                     XY-Y30H 30W+30W HIFI Stere... $9.09
$12.99
SKU: GY21112-1
$9.09
$12.99

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DC 0-99.9V Voltage Monitor Module Programmable Delay Relay Switch Controller Battery Protector DC 0-99.9V Voltage Monitor Module Programmable Delay Relay Switch Controller Battery Protector 1.Description: A30-U1 is a DC 99.9V Voltage Monitor Module with Delay. It can flexibly set detection upper and lower limit voltage values and set triggering conditions.It can realize functions such as voltage detection, overvoltage and... $14.99 SKU: GY21111-1
$14.99

DC 8V-100V Battery Capacity Monitor, Digital Battery Status Tester Meter, Battery Percentage Level Indicator Voltage Power Display DC 8V-100V Battery Capacity Monitor, Digital Battery Status Tester Meter, Battery Percentage Level Indicator Voltage Power Display PZEM-009 DC8V-100V Battery Capacity Monitor 1.Description:   PZEM-009 is a DC8V-100V Battery Capacity Monitor which can supports Lithium iron phosphate battery and ternary polymer lithium battery, also can support multiple bat... $8.39
$11.99
SKU: GY21110-1
$8.39
$11.99

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Battery Discharge Controller, DC 8V-86V Battery Voltage Monitor Protector Lithium/Lead-Acid Battery Tester Battery Discharge Controller, DC 8V-86V Battery Voltage Monitor Protector Lithium/Lead-Acid Battery Tester 1.Description:    It is a Battery Discharge Controller DC 8V-86V Battery Voltage Monitor Protector Lithium/Lead-Acid Battery Tester. 2.Feature:   1>.Battery overvoltage or undervoltage protection   2>... $10.49
$14.99
SKU: GY20771-1
$10.49
$14.99

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DC 12V 24V 50W Mono Voice Playback Module, 9-Channel Music Power Digital Amplifier, 64Mbit Flash MP3 WAV UART Controller for Arduino DC 12V 24V 50W Mono Voice Playback Module, 9-Channel Music Power Digital Amplifier, 64Mbit Flash MP3 WAV UART Controller for Arduino 1.Description:   DY-HL50F is a DC 12V 24V 60W Mono Voice Playback Module which can be trigger play by 9 input signal. It is a one-on-one segmented trigger control player that supports MP3 and WAV decoding formats; 9 input signal c... $9.45
$13.50
SKU: GY21102-1
$9.45
$13.50

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DC 12V 24V 30W Mono Voice Playback Module, 9-Channel Music Power Digital Amplifier, 64Mbit Flash MP3 WAV UART Controller for Arduino DC 12V 24V 30W Mono Voice Playback Module, 9-Channel Music Power Digital Amplifier, 64Mbit Flash MP3 WAV UART Controller for Arduino                                         DY... $8.39
$11.99
SKU: GY21101-1
$8.39
$11.99

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Battery Voltage Monitor, DC 12V Low Voltage Disconnect Switch Over Charge Discharge Controller Protection Board for DC 0-99.9V Lead Acid Lithium Battery Battery Voltage Monitor, DC 12V Low Voltage Disconnect Switch Over Charge Discharge Controller Protection Board for DC 0-99.9V Lead Acid Lithium Battery 1.Description:    It is a DC 0-99.9V Battery Charge Discharge Voltage Monitor. It can input voltage from DC 0-99.9V Battery with relay switch output which can controller DC or AC various equipment. It can set battery discharg... $5.59
$7.99
SKU: GY21059-1
$5.59
$7.99

31

DIY Kit RDA5807 FM Radio, Dual Channel 87-108MHz Radio Receiver Kits with 0.5W Speaker for Electronic Soldering Practice and Learning DIY Kit RDA5807 FM Radio, Dual Channel 87-108MHz Radio Receiver Kits with 0.5W Speaker for Electronic Soldering Practice and Learning 1.Introduction:   It is a 3.0V RDA5807 87MHz-108MHz FM Radio Receiver DIY Kit. It is a simple FM receiver and can be used all over the world with power by AA*2 battery. It is very suitable for users to learn electronic circuits, p... $8.39
$11.99
SKU: GY21106-1
$8.39
$11.99

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L298N Driver Module, 4-Channel Motor Driving Board, Intelligent Smart Car Motor Drive Board L298N Driver Module, 4-Channel Motor Driving Board, Intelligent Smart Car Motor Drive Board 1.Description:    The 4-Channel L298N Motor Driver Module integrates two L298N chips and can simultaneously drive four DC motors, allowing control over motor direction and speed. The module includes an LM2596S voltage regulat... $6.99
$9.99
SKU: GY21057-1
$6.99
$9.99

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DIY Wooden Radio Kit, FM 88-108Mhz Radio with Battery Assembly Kit, STEM Kits for School Student Learning Teaching DIY Wooden Radio Kit, FM 88-108Mhz Radio with Battery Assembly Kit, STEM Kits for School Student Learning Teaching Description: 【SIMPLE ASSEMBLY】This kit doesn't require soldering!! The FM module is already soldered, you only need to assemble the battery, antenna, speaker and wooden cases. If you are a beginner or like to build projects, this r... $12.59
$17.99
SKU: GY21088-1
$12.59
$17.99

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DIY Infrared Remote Control Car Kit, C51 Microcontroller Electronic Assembly and Soldering DIY Kits DIY Infrared Remote Control Car Kit, C51 Microcontroller Electronic Assembly and Soldering DIY Kits 1.Introduction:   D2-4 is a Infrared Remote Control Intelligent Car DIY Kit. Users can control various operating states of the smart car through an infrared remote control, such as forward, turns left, turns right, stop, and also ... $6.99
$9.99
SKU: GY21099-1
$6.99
$9.99

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Wooden Science DIY Kits, Electric Fluttering Butterfly for Children's STEM Education with Gear-Driven Mechanical Technology Wooden Science DIY Kits, Electric Fluttering Butterfly for Children's STEM Education with Gear-Driven Mechanical Technology 1.Description:      This small creation utilizes gears and linkages, employing two connecting rods—one end attached to the wings and the other end connected to a gear. By harnessing the power of a motor to rot... $6.99
$9.99
SKU: GY21094-1
$6.99
$9.99

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DIY Colorful Star-Shaped Light Handmade Science Experiment STEM Education Kits DIY Colorful Star-Shaped Light Handmade Science Experiment STEM Education Kits 1.Description:       Dazzling star lights are a type of decoration that has a certain beautifying effect on both outdoor and indoor environments. In the urban streets or green spaces we see, this type of ligh... $6.29
$8.99
SKU: GY21096-1
$6.29
$8.99

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4WD Racing Car DIY Kits for Primary and Secondary School Students STEM Eduction, Hands-on Assembly Science Experiment Kits 4WD Racing Car DIY Kits for Primary and Secondary School Students STEM Eduction, Hands-on Assembly Science Experiment Kits 1.Description:    This is a racing car model that features a cool appearance, high manufacturing quality, and fast driving speed. It provides an opportunity for children to develop their hands-on skills and nurtures their cur... $6.29
$8.99
SKU: GY21095-1
$6.29
$8.99

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24V 4 Channel Relay Module Switch Optocoupler Fully Isolated Microcontroller PLC Amplification 24V 4 Channel Relay Module Switch Optocoupler Fully Isolated Microcontroller PLC Amplification 1.Description:   It is a 24V 4 Channel Relay Module/Switch Optocoupler Fully Isolated Microcontroller PLC Amplification. 2.Parameter:   1>.Power supply: 24V   2>.Static current: 0mA   3>.Single c... $7.99 SKU: GY21084-1
$7.99

5V Delay Relay Module with Edge-Triggered Control and Loop Cycle for Seamless Switching 5V Delay Relay Module with Edge-Triggered Control and Loop Cycle for Seamless Switching 1.Description:    It is a 5V Delay Relay Module with Edge-Triggered Control and Loop Cycle for Seamless Switching 2.Parameter:   1>.Power supply: DC 5V   2>.Input signal: High-level (PNP), Low-level (... $10.99 SKU: GY21080-1
$10.99

D2-8 Intelligent Tracking Line Smart Car DIY Kits, Fun STEM Kits for School Students Electronic Soldering Learning Practice Kits D2-8 Intelligent Tracking Line Smart Car DIY Kits, Fun STEM Kits for School Students Electronic Soldering Learning Practice Kits 1.Description:    It is a D2-8 Intelligent Tracking Line Smart Car Soldering Electronic Parts Practice Soldering Learning Electronics Kit. Please note: Batteries appeared in picture are not included. PCB color was differe... $6.99
$9.99
SKU: GY21073-1
$6.99
$9.99

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DIY Kit HC-SR04 Ultrasonic Automatic Obstacle Avoidance Intelligent Car, STEM Electronic Kits for School Students Learning Competition DIY Project DIY Kit HC-SR04 Ultrasonic Automatic Obstacle Avoidance Intelligent Car, STEM Electronic Kits for School Students Learning Competition DIY Project 1.Introduction:   HU-046 is a HC-SR04 Ultrasonic Automatic Obstacle Avoidance Intelligent Car DIY Kit. The car automatically advances, and when the sensor senses an obstacle in front, it automatically turns left or right, or even ... $11.19
$15.99
SKU: GY21074-1
$11.19
$15.99

31

3A Boost Buck Charging Module for 2/3/4-Cell Batteries 3A Boost Buck Charging Module for 2/3/4-Cell Batteries 1.Description:   1>.Support 1-4 series of lithium-ion batteries   2>.Resistance adjustment of charging current (input and battery terminals)   3>.3A maximum charging current   4>.Resistance regulat... $5.59
$7.99
SKU: GY21035-1
$5.59
$7.99

31

Positive And Negative DC Regulated Power Supply DIY Electronic Kit, 3 Terminal Regulated 9V Dual Power Module Assembly Kits Positive And Negative DC Regulated Power Supply DIY Electronic Kit, 3 Terminal Regulated 9V Dual Power Module Assembly Kits 1.Description:    It is a Positive and Negative DC Regulated Power Supply DIY Electronic kit, 3 Terminal Regulated 9V Dual Power Board Module.   2.Key points for installing the stabilizer block:   1>... $6.99
$9.99
SKU: GY21032-1
$6.99
$9.99

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Gate Circuit Combinational Logic Circuit Analysis Assembly Testing DIY Kits Gate Circuit Combinational Logic Circuit Analysis Assembly Testing DIY Kits 1.Description:    The main function of the kit is to analyze, assemble, and test gate circuits and combinational logic circuits. It can be used for vocational college skill training, skill assessment, vocational single enro... $10.49
$14.99
SKU: GY21031-1
$10.49
$14.99

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30 Segment Audio Rhythm Dual Color LED Light Kit, Music Spectrum Volume Level Indicator Electronic DIY Kit 30 Segment Audio Rhythm Dual Color LED Light Kit, Music Spectrum Volume Level Indicator Electronic DIY Kit 1.Description:   1>.It can automatically adjust the brightness and color according to the rhythm of the sound, enhancing the atmosphere of the music scene.   2>.It can adjust the rhythm high and low to adapt to di... $8.39
$11.99
SKU: GY21028-1
$8.39
$11.99

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Intelligent Automatic Watering System Science Experiment DIY Humidity Sensor STEM Kit Intelligent Automatic Watering System Science Experiment DIY Humidity Sensor STEM Kit 1.Description:   After this automatic watering system is powered on, it will determine whether to pump water to water the flowers based on the signal returned by the soil moisture sensor. During use, the LED light will go out in... $11.89
$16.99
SKU: GY21025-1
$11.89
$16.99

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Intelligent Human Body Induction Fan Sensor Learning DIY Kits for Primary and Secondary School Students Scientific Experimental Teaching Intelligent Human Body Induction Fan Sensor Learning DIY Kits for Primary and Secondary School Students Scientific Experimental Teaching 1.Description:   This human body sensing fan automatically turns on the fan when the human body sensing module senses someone. When a person leaves the human body sensing module, the fan will automatic shutdown, very intelligent... $5.53
$8.50
SKU: GY21024-1
$5.53
$8.50

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DIY Kit Mono TDA7293 7294 Amplifier AC12-36V Subwoofer High-power Amplifier Board DIY Kit Mono TDA7293 7294 Amplifier AC12-36V Subwoofer High-power Amplifier Board 1.Description:    The circuit is a standard circuit, stable and reliable.    The filtering adopts a voltage withstand voltage of 50V and a capacity of 2200uf large electrolysis.    Power supply v... $5.59
$7.99
SKU: GY21022-1
$5.59
$7.99

31

AC 110V Motor Forward Reverse Controller 16A Motor Drive Module AC 100V 220V Limit Switch AC 110V Motor Forward Reverse Controller 16A Motor Drive Module AC 100V 220V Limit Switch 1.Description:   It is a motor forward and reverse controller.It can control the forward and reverse rotation of the single-phase AC motor,and the signal input can be connected to the sensor/MCU/PLC/switch. 2.Feature:  ... $7.69
$10.99
SKU: GY20639
$7.69
$10.99

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DC 12V 5-Channel Self-locking Relay Module 5Bit 10A High/Low Level Trigger Select Switch Controller DC 12V 5-Channel Self-locking Relay Module 5Bit 10A High/Low Level Trigger Select Switch Controller 1.Description:   It is a latching relay module.It has 5 relay channels and can connect 5 loads. 2.Feature:   1).The self-locking relay module has a power indicator and a working indicator,and the working status of the ... $11.99 SKU: GY20640
$11.99

8M Recordable Voice Play Module, Button Control Sound Module With Volume Adjustment and USB Data Cable For DIY Music Gift Box Greeting Card 8M Recordable Voice Play Module, Button Control Sound Module With Volume Adjustment and USB Data Cable For DIY Music Gift Box Greeting Card Product Introduction: 1.Power Supply Voltage:4.5-5V or 3.7V lithium battery; Output 0.5-1W 2.Capacity:8M 3.Board Size: 30X30mm 4.Speaker Diameter:m36mm 5.Memory Card Slot:Micro SDXC 6.Supported forma... $6.99
$9.99
SKU: GY18094
$6.99
$9.99

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FM Bluetooth-Compatible Audio Receiver MP3 Decoder Lossless AUX/U-disk/TF Card Music Player FM Bluetooth-Compatible Audio Receiver MP3 Decoder Lossless AUX/U-disk/TF Card Music Player 1.Description:   It is a FM Bluetooth Audio Receiver MP3 Lossless Decoder which perfect for DIY wireless Bluetooth speakers and transponders. This module can receive Bluetooth music, as well as FM/AUX/USB/TF card audio input. Th... $12.45
$17.79
SKU: GY21014-1
$12.45
$17.79

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GT-U7 GPS Module Navigation Satellite Positioning Compatible with NEO-6M 51 MCU STM32 GT-U7 GPS Module Navigation Satellite Positioning Compatible with NEO-6M 51 MCU STM32 1.Description:   1>.Equipped with a USB interface, you can directly use your phone's data cable to view the positioning effect on the computer;   2>.USB direct connection to the computer, which means the upper com... $9.09
$12.99
SKU: GY21007-1
$9.09
$12.99

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DIY Kit Music Audio Spectrum Indicator AUX MIC Peak Hold Voice Control Level Light LM3914 Electronic Soldering Practice Kits DIY Kit Music Audio Spectrum Indicator AUX MIC Peak Hold Voice Control Level Light LM3914 Electronic Soldering Practice Kits 1.Introduction: FED-301K is a Audio Spectrum Indicator DIY Kit. It can display in Red/Green according to the input audio signal from microphone or AUX audio socket.It can be used to display the intensity of audio.The number of LED disp... $6.99
$9.99
SKU: GY21012-1
$6.99
$9.99

30

OCL Amplifier DIY Kits 100w Dual Channel Stereo Sound Amplifier Board OCL Amplifier DIY Kits 100w Dual Channel Stereo Sound Amplifier Board 1.Description:    This OCL high power 100W dual channel amplifier board welding kit comes with 4 high power transistors and two independent stereo channels.    OCL circuit is highly stable and has wide frequency r... $5.59
$7.99
SKU: GY20987-1
$5.59
$7.99

31

DIY Kit LM317 Adjustable Voltage Regulator With LED Meter DIY Kit LM317 Adjustable Voltage Regulator With LED Meter 1.Description:   1>.LM317 adjustable DC voltage regulator diy kit with fixed three-terminal voltage regulation circuit, easy to use;   2>.Wide voltage adjustment range, good voltage stabilization performance, low nois... $6.29
$8.99
SKU: GY20986-1
$6.29
$8.99

30

2PCS Buzzer Alarm with Strobe Red LED Light, DC 24V Strobe Siren Piezo Buzzer, 100dB Electronic Beep Buzzer for Car Alarm Home Security 2PCS Buzzer Alarm with Strobe Red LED Light, DC 24V Strobe Siren Piezo Buzzer, 100dB Electronic Beep Buzzer for Car Alarm Home Security Description:   BJ-3 is a DC 24V 100dB Audible Visual Alarm. It works as Red Flashing and High Decibel Buzzer after power ON. It can be used for on-site audible and flashing alarms. Features:   Loud Sound Alarm Wit... $6.29
$8.99
SKU: GY20964-2
$6.29
$8.99

30

DC 5-60V ESP32 Single Channel Wireless WIFI Relay Module ESP32-WROOM Development Board DC 5-60V ESP32 Single Channel Wireless WIFI Relay Module ESP32-WROOM Development Board 1.Description:    DC powered ESP32 single-channel relay development board equipped with ESP32-WROOM-32EWiFi&BLE mode Blocks, I/O ports are all led out, and support DC5-60V power supply mode. It is suitable for ESP32 secon... $9.37
$13.39
SKU: GY20985-1
$9.37
$13.39

31

8 Channel ESP8266 Wireless WIFI Relay Module ESP-12F Development Board 8 Channel ESP8266 Wireless WIFI Relay Module ESP-12F Development Board 1.Description:    This ESP8266 WIFI 8-Channel Relay Module ESP-12F Development Board is perfect for Arduino development environment with reference code and is suitable for ESP8266 secondary development and learning, smart hom... $13.29
$18.99
SKU: GY20984-1
$13.29
$18.99

30

ESP8266 WIFI 4 Channel Relay Module ESP-12F Development Board ESP8266 WIFI 4 Channel Relay Module ESP-12F Development Board 1.Description:   This ESP8266 WIFI 4-Channel Relay Module is an ideal choice for home automation system. It supports WiFi connection, enabling you to control your appliances or devices remotely. It can be used to switch on/off lig... $9.79
$13.99
SKU: GY20982-1
$9.79
$13.99

31

ESP32-WROOM-32UE 16MB Dual Core WiFi Wireless Bluetooth-Compatible MCU Module ESP32-WROOM-32UE 16MB Dual Core WiFi Wireless Bluetooth-Compatible MCU Module 1.Description:    ESP32-WROOM-32UE is a powerful dual-core Wi-Fi & Bluetooth MCU module for IoT applications. It features low power consumption, high performance and wide range of usage. It is ideal for tasks such as audi... $6.29
$8.99
SKU: GY20979-1
$6.29
$8.99

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ESP32 TYPE-C USB CH340C WiFi Bluetooth-Compatible Ultra-Low Power Dual Core Development Board ESP32 TYPE-C USB CH340C WiFi Bluetooth-Compatible Ultra-Low Power Dual Core Development Board 1.Description:    ESP32 CH340C is a general-purpose WI-FI+BT module with low power consumption Bluetooth and WiFi, widely applicable, integrated SPI flash, and support for wide range wireless communication connection. It also... $5.59
$7.99
SKU: GY20978-1
$5.59
$7.99

31

ESP32 Type-C USB WiFi Bluetooth-Compatible ESP-WROOM-32 Development Board ESP32 Type-C USB WiFi Bluetooth-Compatible ESP-WROOM-32 Development Board 1.Description:    ESP32-WROOM-32 is a general-purpose WI-FI+BT+BLEMCU module with low power consumption Bluetooth and WiFi, widely applicable, integrated SPI flash, and support for wide range wireless communication connection... $6.29
$8.99
SKU: GY20977-1
$6.29
$8.99

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ESP32 Development Board Wireless WiFi Bluetooth-Compatible 2-in-1 Dual Core CPU ESP32 Module ESP32 Development Board Wireless WiFi Bluetooth-Compatible 2-in-1 Dual Core CPU ESP32 Module 1.Description:   MINI KIT ESP32 Module Development Board is a powerful dual-core CPU, wireless WiFi & Bluetooth 2 in 1 development board, enabling a wide range of applications such as IoT, industrial control, smart home, and s... $5.95
$8.50
SKU: GY20976-1
$5.95
$8.50

30

DS1302 DIY Rotating LED Clock Kit with Temperature and Light Control, 4-Digit Display DS1302 DIY Rotating LED Clock Kit with Temperature and Light Control, 4-Digit Display 1.Description:   Our 4-Digit LED Clock Temperature Controller DIY Kit is the perfect addition to any home or office. With its automatic brightness adjustment, alarm clock function, and memory retention for power outages, you can r... $7.55
$10.79
SKU: GY20969-1
$7.55
$10.79

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51 Single-chip Microcomputer Traffic Light DIY Kit Intelligent Signal Lamp Electronic Soldering Training Practice kits 51 Single-chip Microcomputer Traffic Light DIY Kit Intelligent Signal Lamp Electronic Soldering Training Practice kits Description:   Take control of traffic lights with this easy-to-use DIY kit! Featuring a countdown timer and sound prompt, you can manually control red, green, and yellow lights with three included light-emitting diodes. No progra... $5.59
$7.99
SKU: GY20967-1
$5.59
$7.99

31

Bluetooth-Compatible Audio Amplifier Electronic Kits, Portable DIY Speaker Kits With Acrylic Shell for School Home Education Electronic Soldering Practice Learning Bluetooth-Compatible Audio Amplifier Electronic Kits, Portable DIY Speaker Kits With Acrylic Shell for School Home Education Electronic Soldering Practice Learning 1.Description:    Looking for a fun and educational project to build your own Bluetooth speaker? Our DIY kit includes everything you need to create a high-quality sound system, including an electronic amplifier and acrylic ... $6.99
$9.99
SKU: GY20971-1
$6.99
$9.99

30

Ultrasonic Suspension DIY Kit DC 12V Mini Acoustic Levitator Electronic Soldering Learning DIY Kits Ultrasonic Suspension DIY Kit DC 12V Mini Acoustic Levitator Electronic Soldering Learning DIY Kits 1.Introduction:   It is a DC 12V Ultrasonic Suspension Electronic Soldering DIY Kit. The suspending device operates at a frequency of 40KHZ in the air and can capture light objects with a density of 2-3MM, such as foam balls. It i... $5.59
$7.99
SKU: GY20962-1
$5.59
$7.99

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DC 12V 24V 100W TWS Bluetooth-Compatible Amplifier TPA3116 Audio Amplifier Module AUX USB Audio Input DC 12V 24V 100W TWS Bluetooth-Compatible Amplifier TPA3116 Audio Amplifier Module AUX USB Audio Input 1.Description:   ZK-1001B is a DC 12V 24V 100W TWS Bluetooth Amplifier Audio Module, perfect for DIY wireless Bluetooth speakers and transponders. This module can receive Bluetooth music, as well as AUX/USB audio input.  It a... $11.19
$15.99
SKU: GY20961-1
$11.19
$15.99

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