Keypad D220ATD
Installation Instructions
1.0
Description
The D220ATD Keypad (see Figure 1) is a low-profile, surface-mount, three-wire unit designed for use with the Bosch Security
Systems D2112, D2112E, and D2212 Control/Communicators. The D220ATD features an illuminated keypad, LED display,
three programmable emergency keys, and built-in sounder that emits several distinct tones.
The control/communicator supplies all power and data requirements for the D220ATD using a simple three-wire connection.
1.1
Display
The D220ATD Keypad uses LEDs to display system status. When events occur that affect points, the D220ATD illuminates
the LED corresponding to the point number.
1.2
Keys
The D220ATD Keypad has a [CLEAR] key,
three emergency keys (labeled A, B, and C), and number keys from zero to nine.
These keys are used to enter functions and personal passcodes into the panel. The [*] key is not used.
1.3
Response Tones
The D220ATD Keypad uses a sounder to annunciate system conditions. You can disable the sounder if you choose.
1
2
3
A
5
4
6
7
8
9
*
CLEAR
0
1 2 3 4 5 6 7 8
ALL
PART
OK
System Status Lights
Sounder
Function Keys
ON NO DELAY
B
C
Point Status
Figure 1: D220ATD Keypad
2.0
Specifications
Operating Voltage
Nominal 12 VDC supplied by the Control/Communicator auxiliary power supply.
Current Requirements
Maximum: 125 mA keypad backlights on, LCD on, LED on, tone on
Standby: 30 mA backlight off
Enclosure Dimensions
(H x W x D)
4.56 in. x 8.15 in. x 0.816 in. (11.6 cm x 20.7 cm x 21 mm)
Operating Temperature
+32
°
F to+122
°
F (0
°
C to +50
°
C)
Non-condensing Relative
Humidity
5% to 85% at +86
°
F (+30
°
C)
Command Center Wiring
Three-wire cable supplies data and power
