Esser 018001 12 V 1.2 Ah Backup Power Battery

This is a 12 V accumulator with 1.2 Ah capacity that comes into operation when mains power is cut in fire alarm systems. Because it is the smallest capacity in the series, it is preferred in small panels and auxiliary units where current draw remains low. Its compact housing fits easily into narrow battery compartments. The system's ability to sound alarm even without mains power depends on this component; it is among the first items checked during routine maintenance.