You can remote control your curtain by Mobile Phone APP or Alexa Google Home. Also the WIFI curtain switch can percentage open/close the curtain(0%-100%). Plug Type :EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Chip:ESP8285(support DIY firmware) Power Supply:AC 95-250V Max Current: 10A/250V Max power:2200W Wireless: IEEE 802.11 b/g/n 2.4G Security: WPA-PSK/WPA2-PSK Use For Electric Curtain Electric Blinds Electric Roller Shutter Electric Garage Door Electric Shutter Door How to Make the Curtain Switch to Record the Running Time for Open/Close the Curtain. To percentage adjust the curtain in APP,you need to make the switch to record the running time for open/close the curtain. A.The running time for opening the curtain. 1.Firstly make sure that you closed the shutter fully, press the "PAUSE" button for 5s until the indicator blinking,then press the "open" button to open the curtain. 2. When the shutter open fully,press the "PAUSE" button.the switch will record the opening time. B.The running time for close the curtain. 1.Make sure that the shutter was open fully,Press the "PAUSE" button for 5s until the indicator blinking,then press the "close" button to close the curtain. 2.When the shutter closed fully,press the "PAUSE" button .The switch will record the closing time. Colour:White/black Material: ABS Voltage: AC100-240V Package Contents: 1 x Smart Curtain 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.