Clopal WiFi Smart Light Switch, Mini DIY Breaker Module, Compatible with Alexa Echo, Google Assistant, Fits Behind Rocker Wall Switches, Support 1 Way or 2 Way?Need Neutral Wire

Design and Install: This smart switch module with mini design (4.0×4.0×2.0 cm) can be placed into the original wall switch box, which can change the rocker switch into a smart one. Input/Output: AC 100-240 V, 16 Amp, 2200 W Max.
APP Control: You can control the smart light switch on the Smart Life/Tuya APP anytime, anywhere. Many functions are allowed on the APP, such as control sharing, scene creation, countdown, timer schedules, and so on.
Create Schedules: You can set the working hours of electrical appliances through the Smart Life APP, which provides you with huge convenience. Set the hallway lights to turn on automatically when you come home at night.
Voice Control: The WiFi switch is compatible with Amazon Alexa and Google Home Assistant. This means that you can turn the home device on/off through command when your hands are busy.
Support 2-Way Circuit: The mini switch module can also connect a pair of 2-way rocker light switches to turn on/off the downstairs light from upstairs. You can also track the device’s real-time status anytime on the app.
NOTE: You need neutral wire! The smart switch must be connected to a 2.4 GHz router (5.0 GHz WiFi is not supported), without a separate hub. But there is no limitation on the smartphone network.