Bosch Appliances D1255B Specifications, 3.3DIP Switch Settings and Associated Functions

D1255/D1255B Installation Instructions

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	D1255/D1255B Flying
from control panel	Leads
DATA BUS B (30)	To Data Out (Green)
DATA BUS A (31)	To Data In (Yellow)
POWER + (32*)	To 12 VDC (Red)
COMMON – (29*)	To Common (Black)

* = only on the D9412G Control Panel

3.3DIP 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.

3.3.1Setting 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	3		4		5*	6
1		ON	ON		ON		ON		ON
2		OFF	ON	ON		ON			ON
3		ON	OFF		ON		ON		ON
4		OFF	OFF	ON		ON			ON
5		ON	ON		OFF		ON		ON
6		OFF	ON		OFF	ON			ON
7		ON	OFF		OFF		ON		ON
8		OFF	OFF	OFF		ON			ON

*Encoding Tone ON/OFF.

4.0 Specifications

Table 5: D1255/D1255B Specifications

Power	Nominal 12 VDC supplied by the control panel
Current Required	Idle:	104 mA, armed or disarmed.
	Maximum:	206 mA, with keypad lighted and warning tone ON.
Wiring	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 Ω .
Dimensions	4.6 in. x 8.1 in. x 0.8 in.
H x W x D	(11.6 cm x 20.7 cm x 20.7 cm)
Color	D1255	PMS Warm Gray
	D1255B	White and PMS 429 Gray
Display	16-character vacuum fluorescent display. Each character is a 14-segment unit. Soft blue color.
Operating Temperature	+32°F to +122°F (0°C to +50°C)
Relative Humidity	5% to 85% @ +86°F (+30°C)

Bosch Security Systems 8/04 74-06819-000-F 5