D9412GV2/D7412GV2 | Troubleshooting Guide | 4.0 Appendix
130 Bosch Security Systems, Inc. | 11/05 | F01U011024B
4.4.3 SDI Bus Specifications
Keypads
Table 62: D1255/D1255B Keypad Specifications
Power Nominal 12 VDC supplied by the control panel
Idle: 104 mA, armed or disarmed. Current Required
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
H x W x D
11.6 cm x 20.7 cm x 20.7 cm
(4.6 in. x 8.1 in. x 0.8 in.)
D1255 PMS Warm Gray Color
D1255B White and PMS 429 Gray
Display 16-character vacuum fluorescent display. Each character is a 14-segment unit. Soft blue color.
Operating Temperature 0°C to +50°C (+32°F to +122°F)
Relative Humidity 5% to 85% @ +30°C (+86°F)
Table 63: D1260 Keypad Specifications
Voltage Nominal 12 VDC
Idle 135 mA
Maximum* 208 mA
Power Requirements
Standby Current
* with speaker and display backlight at maximum
Dimensions (H x W x D)
D1260 10.9 cm x 20 cm x 2.6 cm
(4.6 in. x 8.2 in. x 0.8 in.)
D1260B 12.6 cm x 21 cm x 3.2 cm
(5.0 in. x 8.2 in. x 1.3 in.)
Weight 439 g (15.5 oz.)
D1260 Off white
D1260B Off white and dark gray
D1260BLK Black
D1260R Red
Color
D1260W White
Material
D1260 GE CYCOLOY
®
CH10 UL94-HB Fire Rated
D1260B CHI MEI POLYLAC
®
PA-747 with UV Stabilizer
UL94-HB Fire Rated
Enclosure
Environmental Intended for indoor use
Operating 0°C to +49°C
(+32°F to +120°F)
Temperature
Relative
Humidity
95% + 2% @ +49°C (+120°F)
Display Type Backlit LCD