PC817, 8 4 2 channel opto-isolator breakout for Arduino optoisolator optocoupler

PC817 8, 4 & 2 channel opto isolator for Arduio ESP32 ESP8266. PC817 8,4 and 2 channel opto isolator for Arduio ESP32 ESP8266. It uses the PC817 opto isolator. Great for use in noisy circuits where signal lines require electrical isolation.

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