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LILYGO® T-Relay 5V 8 Channel Relay Module ESP32 Wireless Development Board WIFI Bluetooth With Optocoupler Isolation For Arduino

T-Relay 5V 8-Channel Relay Module for Arduino ESP32 Wireless Development Board with WIFI Bluetooth and Optocoupler Isolation

DC 5-24V 4 Channel Pro mini PLC Board Relay Shield Module for Arduino Multifunction Delay Timer Switch Board

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50PCS KY-019 5V 1-Channel Relay Module Opto-Isolated for Arduino/ESP32/Raspberry Pi Home Automation Low/High Level Trigger

8 Channel Pro mini PLC Relay Shield Module for Arduino - Multifunction Delay Timer Switch Board

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4pcs 5V 16-Channel Relay Interface Board Module Optocoupler LED LM2576 Power for Arduino DIY Kit PiC ARM AVR

10pcs 1 Channel 5V Relay Module Time Delay Relay Module 6-30V Trigger OFF / ON Switch Timing Cycle For arduino Relay Board Rele