This tube motor uses a 12VDC 0.8A power supply (not included). This tubular motor is ideal for your indoor window decoration such as role gods. Fits in roller goddess tubes from 28mm. The motor has a quiet operation and opens or closes your window decoration effortlessly remotely via radio control. The protocol that this tube motor uses is the Somfy RTS protocol. The tube motor can also be operated wirelessly from the Somfy RTS remote control or via the Somfy Tahoma box.