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| 1.0 Introduction
4 Bosch Security Systems B.V. | 2020.03 | F01U011791-02
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Before installing the D1255RB, D1256RB, or
D1257RB, you should be familiar with the
operation and installation guide and the
program entry guide for the control panel you
are using. Before proceeding with the
installation instructions in this manual, be sure
that you are familiar with the programming
recommendations in the Guide to UL 864 9th
Edition Programming Requirements section of the
control panel’s program entry guide.
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2.1 D1255RB/D1256RB/D1257RB
Features
The D1255RB and D1256RB Fire Keypads and
the D1257RB Fire Alarm Annunciator
are 4-wire
serial devices used with the following Bosch
Security Systems, Inc. control panels:
B9512G-E
B8512G
B8512G-E
D9412GV4
D7412GV4
D7212GV4
D9412GV3
D7412GV3
D7212GV3
D9412GV2
D7412GV2
D1255RB, D1256RB, D1257RB
The D7212GV4, D7212GV3, and
D7212GV2 control panels are not
approved for commercial fire
applications.
2.1.1 D1255RB
The D1255RB has number keys (0 to 9) and
function or menu keys, including [COMMAND]
and [ENTER]. The D1255RB can be used as a
system controller and an annunciator.
Because a passcode is required to use the
keypad, it is usually installed in building
entrances and areas with unrestricted access.
Near an exterior door in a hotel or in a business
lobby is an ideal mounting location, allowing a
responding agency or persons evacuating the
building to identify quickly the type and location
of the emergency from outside without being in
danger.
2.1.2 D1256RB
The D1256RB provides annunciation and system
control. Four function keys on the D1256RB
provide quick execution of alarm silencing,
trouble silencing, annunciator display reset, and
sensor reset functions.
The D1256RB should be mounted in
a secure area or locked inside an
approved clear plastic enclosure.
2.1.3 D1257RB
The D1257RB provides remote annunciation
without system control capability. It can be
mounted in public access locations.
Two keys on the D1257RB allow the user to
select forward or backward through a list of
system events.
2.2 Description
2.2.1 Display
The D1255RB, D1256RB and D1257RB use a
16-character display with custom programmable
text. The custom text programmed at the
control panel appears in the vacuum fluorescent
display (VFD). Refer to Figure 1, Item 1.
The keypads and annunciator show the latest
status conditions of the fire system using words,
numbers, and symbols. When an alarm occurs, a
message remains in the display until the user
acknowledges the event at a keypad or
annunciator. When a series of events affecting
the system occurs, each event appears in order
of its priority.
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