Sonoff Mini - Tasmota

Sonoff Mini switch with ZigBee - hands on! : r/homeautomation

Sonoff Mini R4 Extreme WIFI Smart 2-way Switch ESP32 App/voice Control Work With Alexa Home Assistant TASMOTA Alice Smartthings - AliExpress

Home Automation System - Temperature sensor with SONOFF mini - Hardware connection, OpenHAB - SmartHome