- Timing Function, APP remote control Program your smart curtain switch on App 'smart life/Tuya', -then your curtain, blind, roller shutter can be remote controlled by phone and you can set timing schedule for it, -like open at 7:00am, close at 7:00pm, then your curtain blind can open or close automatically when time is up. - Group Function and Device Sharing You can create group in the APP to manage all the blinds in your house and share the device to all your family members. - Installation Method, Neutral Wire must be required to install the switch.