1-5x SONOFF MINI R4 WiFi Smart Switch Module 2-Way, for Amazon Alexa/Google Home
SONOFF MINI R4 WiFi Smart Switch Module. This smart switch size is 39.5 33 16.8mm, is 60% smaller than MINIR3 and 40% smaller than MINIR2, is more convenient to install in the switch box. Smart Switch DIY.