The present invention concerns a monitoring and control system (1) for monitoring and controlling a plurality of safety critical loads (3) comprising: a power supply (13a, 13b), wherein the power supply comprises a first line (13a) and a second line (13b);...

The supply unit has switches (F1, Fn) arranged in a driver card (22) for temporarily switching a main source (20) for signaling lamps (LED1, LEDn). The signaling lamps signalize risk by transmitting light. An auxiliary source (24) i.e. alternating current ...