4 Pieces CNBINGO Smart Light Switch Module 1 Way/2 Way, Mini DIY WLAN Switch Fits Behind Wall Switch, Smart Switch Compatible with Alexa Echo, Google Home, Smart Life, Neutral Conductor Required

Design and installation: the smart switch module with mini design (4.0 x 4.0 x 2.0 cm) can be inserted into the original wall switch box, which can transform the rocker switch into an intelligent switch. Input & Output: AC 100-240V, 16 Amp Max
APP control: you can control the intelligent light switch anytime and anywhere in the Smart Life/Tuya APP. Many functions are possible in the app, such as: control release, scene creation, countdown, timer plan, etc
Voice Control The WiFi switch is compatible with Amazon Alexa and Google Home Assistant. This means you can turn the home device on and off by command when your hands are busy
Multi-control: the smart switch can be assigned to other switches that have a multi-control function. Thus, it can connect to other switches via the Smart Life app to control the same light
Support 2 Way Circuit The mini switch module can also connect a pair of 2 way rocker light switches to turn on/off the ground floor light from above. You can also track the real-time status of the device at any time on the app