Product Application Area: Factory/Farm/Office/Instrument/Ventilation/ Pump/Motor/Remote control garage door/Remote control house door/Remote control Lamp/Remote control curtains/Remote control Gate and other remote control device. Tuya smart Inching/ Self-locking WIFI Wireless Smart Home Switch Remote Control with for Amazon Alexa, This product is a wireless switch supports inching/self-locking mode. Users can add the device to the APP Smart life in order to remotely control connected home appliances or devices. In self-locking mode, customers can remotely turn on/off connected devices immediately. When in inching mode, customers can have two wiring ways to select, and you can set the inching time in APP. WIFi control model, no need to program. No matter where you are, you only need to download a APP to connect the wifi and control the cloud. RF mode, you can control the board with RF 433 remote controller. HIGH POWER Max.Current 4000W / 30A Tuya wifi Smart Switch Receiver Description: Voltage:AC85-250V 50/60Hz Max.Current:4000W/30A WIFI frequency:2.4G. IEEE 802.11 b/g/n Remote control frequency:433MHz Battery no included in the remote control Colour:White Material:Plastic Package Contents: 1 * receiver 1 * remote control(Without 2 x CR2032 battery) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.