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Serial Relay Module

First of all, try to verify basic functionality of the module by using your computer to control the relay directly. Just keep your initial hardware setup intact, but unplug the ESP8266 WiFi card from the module. Next, send serial commands A00101A2 (Relay ON), and A00100A1 (Relay OFF)through the serial debugging software to see the relay actions.

  1. Serial Relay Board

Serial Relay Board

Serial relay module 1
Serial Relay Module

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    Top Rated Plus
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