This product is a wireless switch supports inching /- mode. Users can the device to the APP eWeLink in order to remotely control connected or devices. In - 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 . No matter where you are, you only need to download a APP to connect the wifi and control the cloud.Note:Please make to select the right model buying.Features:Option1.Working voltage:USB5VOption2.Working voltage:AC85-250VWith signal instruction light and relay pull-on instruction lighPower Less than 1W, and quiescent current:80mACutover current Less than 10A , Cutover voltage Less than 25010A Relay ModeThe life of Relay Model is more than 1,000,00Insulation resistance: 100Maximum pull-: 15mMaximum release time: 5mWorking Temperature: -40 to 70degreWorking Humidity: 40% to 80% RHDefault 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.- when press the inching and button with the light on. Press open relay to pull-on, press relay to cut off.Material: ABScolour: whitePackage Contents:1 x Smart DIY Switch ModuleOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.