Actuator UC. Impulse group switch for central control for 1 motor or for motor relays. Standby loss only 0.05 to 0.4 watts. This impulse group switch implements the commands of the sensor relays or switches and buttons and switches a motor, motor isolating relay MTR12-UC or DC motor relay depending on the setting of the rotary switch on the front. The control voltage at terminals A3 to A8 must have the same potential as the supply voltage. The operating principle of this impulse group switch is that on the one hand it can be controlled in pulses on, stop, off, stop (contact 1 closed - both contacts open - contact 2 closed - both contacts open), and on the other hand it can be specifically selected on or off via additional control inputs. Dynamic refers to control inputs where a pulse of at least 20ms is sufficient to close a contact. Static is a control input where the contact is only closed as long as the control command is present. The designations up and down apply to roller shutters, blinds and roller blinds.