Bosch D1257RB Specsheet
Intrusion Alarm Systems | D1257RB Fire Annunciator
D1257RB Fire Annunciator
www.boschsecurity.com
u Compatible with Bosch GV4 control panels, Bosch
GV3 control panels, and GV2 control panels
(firmware version 7.04 and higher)
u Can be remotely installed in public access areas
The D1257RB Fire Annunciator is typically installed in
building entrances and areas with unrestricted access
because it lacks function keys. This SDI bus
compatible device works with the Bosch Security
Systems, Inc. GV4 control panels, GV3 control panels,
and GV2 control panels (firmware version 7.04 and
higher). Two navigational keys allow the user to step
forward or backward through a list of system events.
This allows a responding agency or persons evacuating
the building to quickly and safely identify the type and
location of the emergency.
The annunciator has a built-in sounder that allows it to
be installed out of sight. Audible tones alert personnel
to fire system events and assist fire fighters to locate
the annunciator.
Functions
Display
The display uses words, numbers, and symbols to
show the status of the fire system. When several
events occur, each event is shown in order of priority
followed by the time of occurrence. In conjunction
with the 16‑character vacuum-fluorescent display
(VFD), four LEDs provide the following system status
indications:
• Fire
u Built-in multi-tone sounder
u Easy to read vacuum fluorescent display (VDF)
shows complete system status in English
u Programmable custom text for each point
• Silenced
• Supervisory
• Trouble
Certifications and approvals
Region Certification
USA UL UOXX: Control Unit Accessories, System
(ANSI/UL 864)
FM
CSFM see our website
FDNY-
6174
CoA
FDNY-
6059 [D9412GV3 & D7412GV3]
CoA
FDNY-
6196
CoA
Installation/configuration notes
Compatible Control Panels
• B9512G/B9512G-E
• B8512G/B8512G-E
• D9412GV4/D7412GV4/D7212GV4
• D9412GV3/D7412GV3/D7212GV3
1
1
2 | D1257RB Fire Annunciator
• D9412GV2/D7412GV2/D7212GV2
1
The D7212GV4, D7212GV3, and D7212GV2 are not
1
listed for commercial fire applications.
Mounting Considerations
The annunciator is a low profile, surface-mounted unit
molded in durable red plastic with three mounting
holes in the base that allow secure, correct positioning
during installation. Protect the surface-mounted
annunciator by mounting it to a D56 or D56R Conduit
Back Box. For desktop applications, the annunciator
can be mounted to a D55 Desk Stand.
Notice
Do not install the annunciator in direct sunlight.
This damages the module components and makes
the display less visible. Do not mount in wet or
moist locations.
Wiring Considerations
The annunciator connects to the control panel for data
and power through a standard four-wire flying lead
cable. For field wiring use 0.8 mm (22 AWG) or
1.2 mm (18 AWG) wires. Resistance cannot exceed
25 Ω. The field wiring connects to a four-wire harness
supplied with the unit.
Notice
Use shielded cable where excessive
electromagnetic interference is a problem.
Trademarks
All hardware and software product names used in this
document are likely to be registered trademarks and
must be treated accordingly.
Mechanical Properties
Color: Red
Dimensions: 11.7 cm x 21 cm x 2 cm
(4.6 in. x 8.2 in. x 0.8 in.)
Material: CHI MEI POLYLAC PA757 ABS with UV
Stabilizer. UL94-HB Fire Rated
Power Requirements
Current: 104 mA minimum, 225 mA maximum
Voltage: 12 VDC nominal supplied by the control
panel
Ordering information
D1257RB Fire Annunciator
Red and gray case.
Order number D1257RB
Accessories
D55 Keypad Desk Stand
Portable desk stand in smoke colored Plexiglas.
Order number D55
D56 Surface Mount Conduit Box
White surface mount box.
Order number D56
D56R Red Surface Mount Conduit Box
Red surface mount box.
Order number D56R
Parts included
Quant. Component
1 Annunciator
1 Hardware pack
1 Literature pack
Technical specifications
Environmental Considerations
Relative humidity 5% to 93% at +32°C (+90°F)
Temperature
(operating)
0°C to +49°C (+32°F to +120°F)
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