In this post we are reviewing the ESP-01 Wi-Fi Relay Module. It is one of the cheapest smart switches you can purchase currently for making smart home, internet of things, and other wireless do it ...
First, take a look inside the device: In principle, the Sonoff Basic is a single-relay unit to be used as retrofit, based on the ESP8266 chip, a very popular and inexpensive Wi-Fi solution. However, ...