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RS485 Modbus-RTU 12V 4Bit Relay Module 4-Channel Switch Controller for Arduino RS485 Modbus-RTU 12V 4Bit Relay Module 4-Channel Switch Controller for Arduino 1.Description:   It is a 4 bit ModbusRTU relay module.It supports RS485 communication interface and TTL communication interface,4 input and output.   2.Feature:   1>.Modbus serial communication  ... $15.79 SKU: GY18120
$15.79

Dual Modbus Relay Module 2Bit Modbus-RTU Switch Signal Input Output RS485 TTL Controller Dual Modbus Relay Module 2Bit Modbus-RTU Switch Signal Input Output RS485 TTL Controller 1.Description:   LC 2 channel Modbus relay module equipped with mature and stable 8-bit MCU and RS485 level communication chip, adopt standard MODBUS RTU format RS485 communication protocol. It can realize 2bit input signal dete... $8.99 SKU: 15045
$8.99

AC 110V 220V Button Control Switch High Level Signal Trigger Countdown Timer Relay Switch Module LED Display AC 110V 220V Button Control Switch High Level Signal Trigger Countdown Timer Relay Switch Module LED Display 1.Description:     YLC-1.1AC220 is a Timer Relay Switch Module .It will start to countdown and turn ON output after get a input trigger signal by press button. Trigger again is invalid during the countdown period.  ... $13.75 SKU: GY18314
$13.75

Power-ON Delay Relay Switch Module DC 12V 60s Programmable Delay Controller Power-ON Delay Relay Switch Module DC 12V 60s Programmable Delay Controller Parameter:   1>.Model: YS-RT1T   2>.Supply voltage: DC 12V   3>.Working current: 68mA   4>.Stand-by current: 2.8mA   5>.Output type: Relay(It can not output voltage)   ... $4.35 SKU: 13836
$4.35

AC 220V 99s 99min Delay Relay Module 10A Switch Controller Adjustable Trigger Delay Circuit Board JK13P-AR AC 220V 99s 99min Delay Relay Module 10A Switch Controller Adjustable Trigger Delay Circuit Board JK13P-AR 1.Description:   JK13P-AR is a trigger delay module.User can adjust delay time by potentiometer to meet require.   2.Feature:   1>.High voltage trigger   2>.Delay time can be set   3... $5.99 SKU: 15144
$5.99

DC 12V 2.4G IoT Wireless Transceiver WIFI Intelligent Controller Switch 10A Relay Module APP Control DC 12V 2.4G IoT Wireless Transceiver WIFI Intelligent Controller Switch 10A Relay Module APP Control 1.Description:   It is a Wifi relay control module.It requires no programming, just download an "eWeLink" APP and link to WIFI to control the built-in cloud.As long as the module is connected to WIFI, the mobile phone ... $13.99 SKU: GY18128
$13.99

DC 12V 10minute Delay Relay Module 10A Switch Controller Adjustable Trigger Delay Circuit Board DC 12V 10minute Delay Relay Module 10A Switch Controller Adjustable Trigger Delay Circuit Board 1.Description:   QF1025 is a trigger delay module.User can adjust delay time by potentiometer to meet require.   2.Feature:   1>.Low level trigger   2>.Support input reverse connection protec... $4.99 SKU: 15148
$4.99

RS485 Modbus-RTU 12V 1Bit Relay Module 1-Channel Switch Controller for Arduino RS485 Modbus-RTU 12V 1Bit Relay Module 1-Channel Switch Controller for Arduino 1.Description:   It is a 1 bit ModbusRTU relay module.It supports RS485 communication interface and TTL communication interface.   2.Feature:   1>.Modbus serial communication   2>.Relay switc... $11.59 SKU: GY18123
$11.59

DC 12V Photosensitive Sensor Controller Relay Driver Waterproof Brightness Adjustable Switch DC 12V Photosensitive Sensor Controller Relay Driver Waterproof Brightness Adjustable Switch 1.Description:   The precision 1-channel photo-relay module adopts genuine high-quality industrial-grade components, military-grade double-sided PCB board, and has two-color LED signal indicator; the layout is comprehensive, the... $6.95 SKU: 14748
$6.95

DC 12V Timer Relay Control Switch DIY Kit 100s Delay Electronic Soldering Practice Learning Kits DC 12V Timer Relay Control Switch DIY Kit 100s Delay Electronic Soldering Practice Learning Kits 1.Introduction: TME-R1 is a 100s DC 12V Timer Relay Control Switch DIY Kit. It is a very simple delay module. User can set delay by potentiometer and start delay by press button. It is very suitable for starting protection of ele... $4.99 SKU: GY19619
$4.99

6 Channel SPDT Switch Module, DC 24V Relay Module, AC 270V with Isolated Optocoupler DIN Rail Mount High and Low Level Trigger 6 Channel SPDT Switch Module, DC 24V Relay Module, AC 270V with Isolated Optocoupler DIN Rail Mount High and Low Level Trigger DC 24V 6 Channel SPDT Relay Module With Isolated Optocoupler and DIN Rail Mount Introduction: It is a Q14F 24V Pluggable 6Bit SPDT Power Relay Module. It includes 6pcs intermediate relay with SPDT output control terminal. It is ... $26.99 SKU: GY20262
$26.99

PID Digital Temperature Controller Thermostat NTC Sensor Heating Cooling Relay Switch for Industrial/Home PID Digital Temperature Controller Thermostat NTC Sensor Heating Cooling Relay Switch for Industrial/Home PID Digital Temperature Controller   1.Description:   It is a PID Digital Temperature Controller with industrial-grade chip, high-precision NTC temperature sensor.   LED digital tube dual display, very clea... $16.99 SKU: GY20490
$16.99

DC 12V 2.4G IoT Wireless Transceiver 4Bit WIFI Intelligent Controller Switch 10A Relay Module 4-Channel APP Control DC 12V 2.4G IoT Wireless Transceiver 4Bit WIFI Intelligent Controller Switch 10A Relay Module 4-Channel APP Control 1.Description:   It is a 4 way Wifi relay control module.It requires no programming,just download an "eWeLink" APP and link to WIFI to control the built-in cloud.As long as the module is connected to WIFI,the mobile ph... $25.99 SKU: GY18126
$25.99

DC 5V-30V Time Delay Switch,12V 24V10A Programmable Relay Switch Module, LED Display Digital Time Cycle 0.1s-999mins ON-Off Control DC 5V-30V Time Delay Switch,12V 24V10A Programmable Relay Switch Module, LED Display Digital Time Cycle 0.1s-999mins ON-Off Control Description: WIDE VOLTAGE: Working voltage is DC 5V-30V, suitable for most equipment, very convenient. Support micro USB 5V power supply. It can be used to control the equipment within DC 30V 5A or within AC 220V 5A. TRIGGER: Sup... $9.99 SKU: GY20599
$9.99

RS485 Modbus-RTU 12V 3Bit Relay Module 3-Channel Switch Controller for Arduino RS485 Modbus-RTU 12V 3Bit Relay Module 3-Channel Switch Controller for Arduino 1.Description:   It is a 3 bit ModbusRTU relay module.It supports RS485 communication interface and TTL communication interface,3 input and output.   2.Feature:   1>.Modbus serial communication  ... $14.99 SKU: GY18121
$14.99

High Temperature Temperature Controller K-type Thermocouple -99~999C LCD Display 10A Relay Switch Controller High Temperature Temperature Controller K-type Thermocouple -99~999C LCD Display 10A Relay Switch Controller XY-T04 High Temperature Controller 1.Description: XY-T04 is a K-type digital high temperature controller module. It can be widely used at Smart home,Industrial control, Automatic irrigation, Indoor ventilation. Protection equipment... $19.99 SKU: GY20337
$19.99

DC 5V 16-Channel Wireless WIFI Module IoT ESP32 Relay Driver Remote Controller 16Bit Switch Module APP Transceiver DC 5V 16-Channel Wireless WIFI Module IoT ESP32 Relay Driver Remote Controller 16Bit Switch Module APP Transceiver 1.Description:   It is a 16-bit relay driver module.It can realize mobile phone, computer, remote control. 2.Feature:   1>.Built-in test code   2>.Multi-bit IoT control   3>.ESP32 main control ch... $16.99 SKU: GY18022
$16.99

220V Raindrop Controller Relay Module Raindrop Sensor Module Leaf Surface Humidity Water Switch On 220V Raindrop Controller Relay Module Raindrop Sensor Module Leaf Surface Humidity Water Switch On Description:   It is a 220V raindrop controller.It can be used to monitor various weather conditions,and directly output with a relay to control the startup and shutdown of motors.   Feature:   ... $11.99 SKU: GY18957
$11.99

1 Channel Self-Locking Switch High Level Trigger 12V Relay Module 1 Channel Self-Locking Switch High Level Trigger 12V Relay Module 1.Description:   It is a 12V self-locking relay module.When the K terminal is in contact with the positive pole,the state of the relay is reversed.Touch it once,the relay is closed,and touch it again,the relay is released. 2.... $12.99 SKU: GY19936
$12.99

AC 110V 220V Trigger Delay Cycle Timing Relay Switch Control Module AC 110V 220V Trigger Delay Cycle Timing Relay Switch Control Module 1.Description:   It is a 220V one channel relay module.It can adjust trigger delay,cycle timing.There are 4 working modes to choose from.   2.Feature:   1).It has a digital display that can display numbers ... $9.99 SKU: GY20509
$9.99


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