Bosch B520-C Auxiliary Power SDI2 Supply Kit, Includes TR1850, D8103, B12, B520

The B520 Auxiliary Power Supply Module is an auxiliary power supply expansion device that connects to compatible control panels through the SDI2 bus. This module is supervised and communicates all status changes to the control panel.
Industrial, commercial, and institutional facilities are typical installations for the B520 module. The B520 address switches allow for easy device addressing. The SDI2 Out terminals provide auxiliary power for SDI2 expansion devices, such as keypads. The AUX PWR terminals provides added auxiliary power capabilities for additional devices such as PIR motion detectors.

Functions
The module monitors and communicates status information over the SDI2 bus for the following:

• Operation (Heartbeat)
• Battery 1 (BATT 1)
• Battery 2 (BATT 2)
• AC input power (AC)
• Battery OK
• Low Battery
• Missing Battery