The MDT Shutter Actuator receives KNX/EIB telegrams and controls up to 8 independent shutter or sunblind drives. Each output uses two monostable relays. The MDRC shutter Actuators can be operated manually via a push button. The outputs are parameterized individually via ETS3/4. The device provides extensive functions like status response, block functions, central function and positioning shutters, blinds and other hangings. Additionally the device provides up to 8 scenes per channel. If the mains voltage fails, all outputs are switched off. After bus voltage failure or recovery the position of the shutter is selected in dependence on the parameterization.