ITEAD Sonoff switches and sockets - cheap ESP8266 Wifi+MQTT hardware - Tutorials & Examples - openHAB Community
TASMOTA Smart Switch by Martin Jerry | ESP8266 2.4G WiFi chip, Smart Light Switch for Home Assistant | Smart Home Devices via MQTT: Amazon.com: Industrial & Scientific
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Nous L6T WiFi Smart Switch Breaker with Tasmota - Nous L6T WiFi Sma...
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TASMOTA Smart Switch by Martin Jerry | ESP8266 2.4G WiFi chip, Smart Light Switch for Home Assistant | Smart Home Devices via MQTT: Amazon.com: Industrial & Scientific