Bosch B520 Auxiliary Power Supply Module

Auxiliary Power Supply Module, Addressable, Supervised

·Provides up to 2 A of 12 V standby current forfire or burglar applications, and up to 4 A of current during a burglary alarm

·Independently monitors up to two 12 V sealedlead-acid batteries (7 Ah to 18 Ah each, for up to 36 Ah total capacity),offering up to 80 hours of standby power. (Battery 1 is required; Battery 2 isoptional)

·Connects via the SDI2 bus for statuscommunication, diagnostics, and supervision of operation, AC power, and batteryhealth

·Powered by the Bosch standard TR1850 plug-intransformer (120 VAC 60 Hz input / 18 VAC, 50 VA output)

·Uses easy-to-read rotary switches for quickmodule addressing on the SDI2 bus

·Works with Bosch control panel series such asB3512, B4512, B5512, B6512, B8512G, B9512G, D7412GV4, and D9412GV4.