individually fused and monitored siren circuits
Display of ‘active’ and ‘fault’ state of each circuit
Separate fault detection output for each siren circuit with direct response to a conventional detector zone, an input on the central processing board or an input on the fire brigade interface
Activation via external switches or open-collector outputs of the control panel, connection either with terminals or flat cable
Monitoring of the supply voltage of siren circuits
Monitoring of signalling device lines by negative monitoring voltage – thereby, the activation of signaling devices is avoided by the monitoring quiescent current
