Free APP Remote Control -- Download the free APP "Smartlife" in Google Store or scan the QR code in the manual. then add a WiFi Curtain Switch to the app.Only Support 2.4GHz WiFi Voice Control -- Wifi curtain switch compatible with Alexa and Google Home. it is easier to open and close the curtains. for example: "Alexa, open shutters"Need Neutral Line Timer Function -- With the free app, you can easily set the timer. #39;time the curtains open at sunrise and sunset. Wifi curtain switch can work with smart curtains, electric doors, smart garage door and other devices, supports max power 2400W. Installation Easy -- Touch screen and crystal panel bring a new experience to manual control. safety and attractive appearance. wireless remote control, convenient and easy to use. High Safety Guaranteed -- The wifi shutter switch is made of flame retardant ABS and has met the safety and quality requirements.