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13. Press each key on the keypad toward the top of the
keypad to ensure proper alignment and operation
of each key through the mating keypad faceplate
openings.
Table 3: Wiring Connections
Four-Wire Flying Leads
from control panel
DATA BUS B (30)
DATA BUS A (31)
POWER + (32*)
COMMON – (29*)
* = only on the D9412G Control Panel
3.3
DIP Switch Settings and Associated
Functions
Select the address of each keypad and silence the
keypad encoding tone by setting the six-position DIP
Switch (refer to Item 7 in Figure 2) located under the
D1255/D1255B Keypad cover.
4.0 Specifications
Table 5: D1255/D1255B Specifications
Power
Current Required
Wiring
Dimensions
H x W x D
Color
Display
Operating Temperature
Relative Humidity
Bosch Security Systems | 8/04 | 74-06819-000-F
D1255/D1255B Flying
Leads
To Data Out (Green)
To Data In (Yellow)
To 12 VDC (Red)
To Common (Black)
Nominal 12 VDC supplied by the control panel
Idle:
104 mA, armed or disarmed.
Maximum:
206 mA, with keypad lighted and warning tone ON.
Four-wire expansion cable supplies Data In, Data Out, +12 VDC, and Common.
Maximum resistance on the conductors connected to SDI BUS A and SDI BUS B is 25 .
4.6 in. x 8.1 in. x 0.8 in.
(11.6 cm x 20.7 cm x 20.7 cm)
D1255
PMS Warm Gray
D1255B
White and PMS 429 Gray
16-character vacuum fluorescent display. Each character is a 14-segment unit. Soft blue color.
+32°F to +122°F (0°C to +50°C)
5% to 85% @ +86°F (+30°C)
D1255/D1255B | Installation Instructions |
3.3.1
Setting the DIP Switches
Switches 1 through 3 assign the address for the specific
keypad. Leave Switches 4 and 6 in the ON position.
For supervised keypads, assign only one
keypad to each address. Switch 5 toggles
the encoding tone ON and OFF. With the
encoding tone turned ON, the keypad
sounds a beep every time a key is
pressed.
Table 4: Switch Settings
Switch
Address #
1
2
1
ON
ON
2
OFF
ON
3
ON
OFF
4
OFF
OFF
5
ON
ON
6
OFF
ON
7
ON
OFF
8
OFF
OFF
*Encoding Tone ON/OFF.
3
4
5*
6
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
ON
5
- Quick Links:
- Audible Tones
- Keypad Function Keys
- Installation
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