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SDI Bus B-: 9 VDC 15000 (4572 m) maximum
SDI2 Bus SDI2 Bus A+; 12 VDC nominal 7500 ft (2286 m) maximum
3
SDI2 Bus B-: 12 VDC nominal (7500 ft) (2286 m) maximum
3
Telephone
Connections
Connection: RJ31X or RJ38X jack can connect the control panels.
Two telco
lines:
Bosch Security Systems, Inc. D928 Dual Phone Line
Module required for two phone line service. Supervision
supplied by the control panel.
3
See SDI2 Bus Wiring Recommendations for more details
Battery
Discharge/
Recharge
Schedule
Discharge
Cycle:
13.9 VDC Charging float level.
13.8 VDC Charging status LED on.
12.1 VDC Low Battery Reports if programmed. Low
Battery LED on.
10.2 VDC Minimum operational voltage.
10.0 VDC Battery load shed.
Recharge
Cycle:
AC ON Load shed relay resets, battery charging
begins, Battery Trouble and AC Restoral
Reports sent.
13.7 VDC Battery Restoral Report sent, Low Battery
LED off.
13.9 VDC Charging status LED off, battery float
charged.
Environmental Temperature: +32ﾟF to +120ﾟF (0ﾟC to +49ﾟC)
Relative
Humidity:
Maximum 93% non-condensing
Arming Stations B920/B930 Keypads,D1255/D1255B/D1255RB Keypads, D1256RB Fire
Command Centers; D1257RB Fire Alarm Annunciators; D1260/D1260B
Keypads; Keyswitch; Keyfobs
Point
Thresholds
On-board
Points 1 to 8
Open Greater than 3.7 VDC, but less than 5.0
VDC.
Normal Greater than 2.0 VDC, but less than 3.0
VDC
Short Greater than 0.0 VDC, but less than 1.3
VDC.
Compatible
Enclosures
D8103 Universal Enclosure, D8109 Fire Enclosure, D8108A Attack
Resistant Enclosure, BATB-40/BATB-80 Battery Box
2
See SDI2 Bus Wiring Recommendations for more details
28 en | Specifications Control Panel
2012.12 | 02 | F.01U.265.462 UL Installation Instructions Bosch Security Systens, Inc.