This product is a wireless switch supports inching /self-locking mode. Users can add the device to the APP eWeLink 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: Turn on 1s and then auto-off Turn off 1s and then auto-on. 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. Note:Please make sure to select the right model before buying,or leave us a message before shipping. Features: Option1.Working voltage:5V Option2.Working voltage:7-32V with RF function With signal instruction light and relay pull-on instruction ligh Power < 1W, and quiescent current:80mA Cutover current< 10A , Cutover voltage< 250 10A Relay Mode The life of Relay Model is more than 1,000,00 Insulation resistance: 100 Maximum pull-on time: 15m Maximum release time: 5m Working Temperature: -40 to 70degre Working Humidity: 40% to 80% RH Default inching Function: Press 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 press the inching and locking button with the light on. Press open relay to pull-on, press close relay to cut off.