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 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 RF433 remote controller. Features: Supports WiFi network. Supports numerous WiFi smart switches on one smart phone. Supports status tracking: device status timely provided to the Tuya / Smart life. Supports remotely turn on or off connected appliances, for example light, electric kettle, electric rice cooker, electric curtain, etc. Supports max 8 enabled scheduled/countdown/loop for each device. Voice Control: Compatible with "Amazon" Alexa, for Google Home/Nest, for IFTTT. Description: Input1: USB 5V Port Input 2 :(screw terminal port): AC85-250V Output:Passive Output(Dry contact) Working frequency: 50-60Hz Working temperature: -20-70 RF433 Frequency Wifi standards/ protocol :IEEE 802.11b/g, WIFI 2.4Ghz Total load power(Output): 10A Max Load(Output):16A Max current(Output):10A type: Wifi Switch color:Photo color Material:PCB+electronic components Package Contents: 1 x Wifi Switch 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.