Features App Remote Control:- Support Smart Life APP /Tuya APP.- Mobile app remote control to open or close curtain. Voice Control:Voice control the curtain switch ON/OFF by Alexa & Google Assistant at home, only Alexa can set percentage control Curtain Percentage Control:Accurately control roller shutter at specify percentage position via App or Alexa Touch Panel Control:Manual control of the device through the glass touch panel for safe operation with wet hands. New Backlight Function- You can turn the backlight on or off manually, or set the time to turn it on and off through the APP to avoid disturbing sleep.- US Standard Size Design- Size: 120mm*72mm*39mm- Suitable for the United States, Israel, Italy, Thailand and other countries. Group Control:Group control of devices and sharing of devices with family members. Timer programming:You can set a timer to open or close the curtains at a specified time. Personalize Scene Settings:With Smart Life scene settings, you can flexibly set your curtain status according to sunrise, sunset or weather conditions. Description Input voltage: 100-250 VAC, 50 / 60HzWiring: Neutral Wire, Live Wire, L1, L2, Max Load: below 600 W App Name: Smart Life or Tuya AppWireless Protocol: Wi-Fi 2.4 GHz 802.11 b / g / n (Not support 5Ghz Wi-Fi)Standby Consumption: below 0.5WDimensions: 120mm*72mm*39mmButton Type: Touch Panel ButtonPlastic Material: Fireproof ABSProduced by ISO9001 Factory: YesPatent Design: Yes What's in the box? 1 * WiFi US Curtain Switch1 * User Guide1 * Terminal1 * Blue Wire