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Relay Unit Description | en 9
Bosch Security Systems User Manual F.01U.278.516 | V1.0 | 2012.11
2.1.3 Front view
1. LED Indicator
2.1.4 Relay Unit rear view
1. RS-485 connector.
See Section A.5.3 RS-485 socket (unit rear), page 30 for wiring.
2. Antenna connector
Status LED
Standby mode (normal operation) Green (permanent)
Backup battery low Green (blinking)
Power supply disconnected Green (flashing)
Help, assistance or fire Red (blinking)
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