Review on π HiLetgo ESP8266 5V WIFI Relay Module - Smart Home Automation System with TOI APP Control by Brandon Garrett
Not what I was looking for.
I couldn't get it to work like that. It uses ESP-01 for WiFi and a second processor for exit monitoring. As there is no documentation for the second processor I removed it and added a PNP transistor to invert one of the ESP-01 outputs to drive the relay. After reprogramming, the ESP-01 works perfectly. At the time of delivery it only works with a dedicated app on your Android phone, not Alexa like I wanted.
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