Installation; Mounting Information (D1255Rb, D1256Rb, And D1257Rb); Wiring Information (D1255Rb, D1256Rb, And D1257Rb); Installation Procedure - Bosch D1255RB Installation Manual

D1255RB/D1256RB/D1257RB | Installation Guide | 3.0
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3.1 Mounting Information (D1255RB,
D1256RB, and D1257RB)
The D1255RB, D1256RB, and D1257RB are low-
profile, surface-mounted units molded in
durable red plastic. Use the D56 Keypad
Conduit Box (protected surface or flush mount)
for mounting the units.
Mounting Locations
• Do not mount the keypads and
annunciators in locations where
they are exposed to direct sunlight.
Direct sunlight can interfere with
the display screen's visibility and
damage internal components.
• Do not mount the units in wet or
moist locations.
3.2 Wiring Information (D1255RB,
D1256RB, and D1257RB)
A four-wire flying lead is required for the data
and power connections between the keypad or
annunciator and the control panel. The unit
includes a wiring harness with four color-coded
flying leads at one end and a female four-pin
connector at the other end.
Refer to Figure 10 and Figure 11 on page 9 to
wire the D1255RB, D1256RB, or D1257RB.
3.3

Installation Procedure

1. Power down the control panel.
2. Using a small flat-bladed screwdriver, gently
push the two bottom tabs up and in to
release the enclosure base. Refer to
Figure 2.
Use caution to avoid damage to the
tabs and hinges.
6

Installation

Figure 2:

Releasing the Enclosure Base

1 - Screwdriver
2 - Tabs
3 - Enclosure base
3. Gently lift the unit from the enclosure base
as the tabs are pushed in.
Figure 3: Lifting the Keypad from the
Enclosure Base
1 - Enclosure base
2 - Tabs
4. Gently pull the keypad apart from the
enclosure base at the top hinges.
Bosch Security Systems B.V. | 2020.03 | F01U011791-02