Automatic Sliding Door Opener Power Supply Controller Motor Control Circuit Board Card Rt19 24VDC(4 remotes kit). The output torque of the motor is adjustale. Automatic close function, the time is adjustable. Keypad / single button interface. Photo beam safety beam interface. User can select Auto-close function. Herzlich willkommen und alles Gute, mein Freund! Farbe:4 Remotes Kit