Already the conception of the ZB 96 emergency lighting supply system allows for all requirements placed on a reliable, economical and environmentally friendly emergency lighting. Sub-stations allows the supplementary enlarging or modification of the system. The single- luminaire monitoring facility gives a cost- and time-saving possibility for the function- and duration test bounded by low. Faults can be easily located and cleared. the Euro ZB.1 is the circuit-monitored system.