Long Battery Life Aqara Roller Shade Driver E1 is a retrofit roller shade controller that does not require a complicated installation and can work with your existing Roller Shade by operating the beaded cord. Easy Installation The Aqara Roller Shade Driver E1 is a retrofit roller shade controller that does not require a complicated installation and can work with your existing Roller Shade by operating the beaded cord. It does not require dedicated wiring and can run both wirelessly from the built-in battery or being plugged into a power supply via the provided USB Type-C cable. Connect the device to the Aqara Home app, and you will be able to forget about operating the device manually: after configuring the automations, it will just work by itself!. Pre-set Schedule & Position Set a schedule, according to your needs, and your roller shades will open or close automatically to a specific position at a specific time. For example, you can freely set the time when you wake up, leave home, arrive home, and sleep.