This product is a wireless switch supports inching /self-locking mode. Users can add the device to the APP 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, Turn on 1s and then auto-off, Turn off 1s and then auto-on. and you can set the inching time in APP . The product enables remote control of through the mobile application , available on both Android and iOS. 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 Specifications: Input voltage: AC 85-250V, Micro-USB 5V input. Output: Signal output only, no voltage output. Max current: 2200W/10A. WiFi standard: WiFi 2.4 ghz b/g. Power Less than 1W, and quiescent current:80mA Cutover current Less than 10A , Cutover voltage Less than 250 10A Relay Mode The life of Relay Model is more than 1,000,00 Insulation resistance: 100 Maximum pull-: 15m Maximum release time: 5m Working Temperature: -40 to 70degre Working Humidity: 40% to 80% RH Default inching Function: the open relay by mobile phone, then cut off the pull-on imediately(default one second), it has the timing-share function at the same time. Self-locking when the inching and locking button with the light on. open relay to pull-on, close relay to cut off. There are differences in printing and silk-screen printing due to different batches, which not affect the use; there are color differences in the actual product due to different light or display. Color: green Material: PCB Package Contents: 1 x 4CH Smart Switch Module 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.