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DIY Kit MQ-3 Sensor Alcohol Detector Tester Alarm System Soldering Teaching Tranining Kits DC5-7.5V MQ-3 Alcohol Detector Alarm Sensor DIY Kit Working voltage: 5-7.5V DC Description: Alcohol concentration alarm circuit This circuit is mainly an alarm control circuit formed by the gas sensor group MQ-3. ... $4.19
~~$5.99~~ SKU: 13602
$4.19
~~$5.99~~
31

DIY Kit NE555 Trigger Circuit Electronic Components Assmbly for Soldering Practice $2.09
~~$2.99~~ SKU: 13601
$2.09
~~$2.99~~
31

4S 3.2V Lithium Iron Phosphate Battery 12.8V 100A Charging Protector Balanced Function Board Parameters: 1>.Overcharge protection voltage:3.75V+/-0.025V 2>.Overcharge release voltage:3.55V+/-0.05V 3>.Overcharge protection delay:1S+/-200mS 4>.Over-discharge protection voltage:2.0V+/-0.05V 5>.Ove... $7.69
~~$10.99~~ SKU: 13593
$7.69
~~$10.99~~
31

5S 3.7V Polymer Lithium-Ion Battery 18.5V 50A Charging Protector Balanced Function Board Parameters: 1>.Overcharge protection voltage:4.25V+/-0.025V 2>.Overcharge release voltage:4.15V+/-0.05V 3>.Overcharge protection delay:1S+/-200mS 4>.Over-discharge protection voltage:2.7V+/-0.05V 5>.Ove... $6.99
~~$9.99~~ SKU: 13590
$6.99
~~$9.99~~
30

RFID Wireless Module 125KHz ID Card Reader Wiegand-26Bit Contactless Controller w/Antenna Parameters: 1>.Input voltage: DC 3V-5V 2>.Work current: 25mA 3>.Working frequency: 125KHz 4>.Suitable type:EM4001/4102 or compatible card 6>.Read distance:<7cm 7>.Working Temperature range:-20... $4.31
~~$5.99~~ SKU: 13584
$4.31
~~$5.99~~
28

ETK3699 Digital Kara OK Surround Reverb Delay Microphone Amplifier Preamp Board Description: It is a Microphone Amplifier Preamp Board.It is used to adjust the sound signal of the microphone Parameters: 1>.Item Name: Microphone Amplifier Preamp Board 2>.Model:SFT-S699 3>... $11.24
~~$14.99~~ SKU: 13562
$11.24
~~$14.99~~
26

AC/DC 12V Liquid Level Controller Sensor Module Water Level Detection Sensor Description: It is an automatic level controller.It can control the working of the equipment by testing the liquid level. Parameters: 1>.Item Name: Automatic level controller 2>.Model:SFT-SK09 3... $4.02
~~$5.59~~ SKU: 13560
$4.02
~~$5.59~~
28

1-Channel Signal Generator 8A Driver Module for Motor/Lamp 1Hz-150KHz Dual Mode LCD PWM Pulse Frequency Duty Cycle Adjustable Module 1.Description: ZK-PP2 signal generator is a device that provides electrical signals at a variety of frequencies, square wave, pulse and output levels. It supports dual mode: PWM mode and PULSE mode. ... $5.75
~~$7.99~~ SKU: 13557
$5.75
~~$7.99~~
29

Signal Generator Square Wave Generator 1-Channel 1Hz-150KHz Dual Mode LCD PWM Pulse Frequency Duty Cycle Adjustable Module 1.Description: ZK-PP1 signal generator is a device that provides electrical signals at a variety of frequencies, square wave, pulse and output levels. It supports dual mode: PWM mode and PULSE mode. It is used as a sign... $5.75
~~$7.99~~ SKU: 13556
$5.75
~~$7.99~~
29

DC 5V-38V Multi-function Meter LCD Voltmeter Ammeter Battery Capacity Tester Power Tester Discharge Timer Temperature Display 1.Description: This product is a multi-function voltage-ammeter. The main function of this product is to measure the voltage and current, and display it in real-time. At the same ti... $6.01
~~$8.59~~ SKU: 13555
$6.01
~~$8.59~~
30

High-Power Stereo Digital Power Amplifier Board 12V 24V 30W+30W 1.Description: DY-AP3015 is a high-power stereo audio module. Dual channels audio signal output.Built-in amplifier module therefore it can connect to loudspeaker directly.It is ideal for DIY speakers and transponders. ... $3.16
~~$4.39~~ SKU: 13552
$3.16
~~$4.39~~
28

3.7V-5V White MP3 Decoder Board Bluetooth-compatible Call Module FM AUX Input Support TF Card/U-Disk Lossless 1.Description: It is a car audio decoding module.So it can be directly connected to amplifier and then connect the speaker.It comes with a control panel, suitable for car Bluetooth speaker devices. 2.Features: ... $5.03
~~$6.99~~ SKU: 13547
$5.03
~~$6.99~~
29

DC Motor Driver Module Forward Reverse Controller 12V 10A Limit Control Description: Motor forward and reverse controller is used to control motor work status to make sure motor can be precisely controlled.Applicable to occasions where the motor control requirements are increased. ... $6.47
~~$8.99~~ SKU: 13543
$6.47
~~$8.99~~
28

DC Motor Driver Module 10A 12V QF-M05 Forward Reverse Controller Self-locking Description: Motor forward and reverse controller is used to control motor work status to make sure motor can be precisely controlled. Applicable to occasions where the motor control requirements are increased. &nbs... $5.75
~~$7.99~~ SKU: 13541
$5.75
~~$7.99~~
29

100s Time Delay Relay Module AC 220V Adjustable Device Power ON Protector Description: It is a AC 220V power ON delay relay module. Used for device boot protection. Parameters: 1>.Item Name:AC 220V 100s Delay Relay Module 2>.Model:QF1022-B-100S 3>.Work voltage:AC 220V ... $3.74
~~$4.99~~ SKU: 13540
$3.74
~~$4.99~~
25

5PCS Solar Charging Module 3.6V 3.7V 4.2V Charging protector Description: It is a solar charging module for single lithium battery. Support charging and discharging at the same time. Parameters: 1>.Item Name:Solar Charging Module 2>.Model:None 3>.Work voltag... $4.17
~~$5.95~~ SKU: 13538
$4.17
~~$5.95~~
30

DC Electronic Load Tester 35W 5A LCD Display Adjustable Constant Current Aging Tester Discharger Voltage Current Power Battery Capacity Display 1.Description: The industrial-grade long-life electronic load tester adopts long-life ball fan which has fast rotating speed and strong wind. Support continuous discharging for non-stop... $15.39
~~$21.99~~ SKU: 13536
$15.39
~~$21.99~~
30

Voice Delay Driver Module DC 3V-9V 1.5A 10s Intelligent Control for Motor Lamp Sound Sensor 1.Description: ZK-SK is a sound control intelligent motor controller that can control the motor or light by sound.ZK-SK will output max 1.5A drive signal when get a sound within 2meter after power ON. Output reset after... $2.17
~~$2.89~~ SKU: 13534
$2.17
~~$2.89~~
26

5PCS USB Converter Standard USB Female to Male to Type-C to Micro USB to 4P Terminal 1.Description: It is a simple interface converter.It includes 4P Terminal,Micro USB female,Type-C USB female,Type A USB male and Type A USB female.It can achieve mutual conversion between these five interfaces.It can be... $4.64
~~$6.45~~ SKU: 13533
$4.64
~~$6.45~~
29

DC-DC USB Step Up Down Power Supply Module Button Control Voltage Current Dual Display Buck Boost Converter 5V to 1.2V-24V 1.Description: XY-SUPA is a DC adjustable step up/down power supply module with 3Bit LED digital tube display.Display output voltage and output current in real time.Press two buttons to adjust output voltage.Set output ... $4.89
~~$6.99~~ SKU: 13527
$4.89
~~$6.99~~
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