2 Channel DC 5V Relay Module With Optocoupler Low Level Trigger Expansion Board Compatible Witharduino R3 MEGA 2560 1280 DSP ARM PIC AVR ST

2 Channel Relay Module With Optocoupler Isolation High&Low Level Trigger Module(5V)

2 Channel Relay Module With Optocoupler Isolation High&Low Level Trigger Module(12V)

24V 30A 2-Channel Relay Module With Optocoupler Isolation High Low Trigger

An Industrial Grade 2-CH Relay Module With RS485 Interface, The Relay Uses A Modbus RTU Protocol With Control Optocoupler Isolation

Relay Module 2 Channel Bluetooth Board APP Remote Switch Control With Light Indicator DC 12V

2 Channel 30A 24V Relay Module With Optocoupler Isolation Supports Low High Level Trigger For Arduino Raspberry Pi

24V 30A 2-Channel Relay Board Optocoupler Isolation High Low Trigger Module

For DC 12V 2 Channel RF 433Mhz Wireless Remote Control Switch Relay Receiver Module For Garage Door/Electric Gate/Curtai

2 Channel Bluetooth Relay Module, App Remote Control With Indicator Light, DC 12V