Power supply for video 4+1 installations with electronic note call; it allows to supply in timer mode the system (about 100 sec.). Outputs protected against overloading and short circuits, able to supply timed power to 1 camera unit and 2 flat videointercoms connected in parallel or 1 camera unit and 1 videointercom (not flat). Output voltages: 13 Vac and 21 Vdc. VDE certified. 8 A modules on DIN bar.