BACK-UP BATTERY SIREN
BWSBUS1

The BWSBUS1 operates like normal siren until main power is disconnected.  Once main power is cut, the siren automatically a ctivates at up to 129dB and can only be deactivated by using the supplied keyswitch or reconnecting the main power and disarming the system.  May be used in place of the system's main siren or as a second siren to draw more attention to an intrusion attempt.