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Relay case 3v Optocoupler Relay Module for ESP8266 Based Board by derschlauste

Relay case 3v Optocoupler Relay Module for ESP8266 Based Board by derschlauste

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Last crawled date: 4 years, 5 months ago

Made a case for the skinny and 70mm long relay shields seen on amazon.

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case derschlauste based optocoupler module relay board 3v esp8266