DIYables 4-channel Relay Module 5V for Arduino, ESP32, ESP8266, Raspberry Pi
4-relay module 5V with optocoupler low-level trigger
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4 CH Active H/L 5V Relay Module
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-800x800.jpg "4 CH Active H/L 5V Relay Module")
4 CH Active H/L 5V Relay Module
Modbus Rtu 4 Way Relay Module 7-24V Relay Module Switch Rs485 / ttl Entrée et sortie avec anti-retours | Fruugo BE
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4 Channel Relay Module 5V/12V/24V, Optocoupler Relay Module Board Trigger Up and Down for Arduino(5V) : Amazon.com.be: Electronics
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4-relay module 5V with optocoupler low-level trigger
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