D279A Operation & Installation Manual
Copyright © 2000 Radionics
Page 7
46456B
D279A
Overview
2.0
Overview
With a D279A, you can arm and disarm a single zone or point of a Radionics Control/Communicator panel
separately from the rest of the system. The Independent Zone Control (IZC) features a user-programmable 4-digit
passcode for arming and disarming, and a built-in panic function. Entry and exit delay times allow you to locate the
D279A Command Center inside the protected area. If you program the D7112, D8112, or D9112 for opening and
closing reports, the D279A can initiate opening and closing reports by zone or point. A 10-wire cable is shipped
with the D279A for interfacing the Independent Zone Control with the panel (4-wires), protective loops (3-wires) and
onboard relay (3-wires).
The D279A is not supervised from the panel:
UL Listed applications require arming device supervision. Use the
D268/D269 Independent Zone Control to meet the UL requirement for arming device supervision.
2.1
Specifications
Operating Voltage
Nominal 12 VDC
Current Requirements
Keypad Idle: 60 mA
Keypad lighted, buzzer on, both loops faulted, and relay activated: 104 mA
Auxiliary Relay Rating
Form C contacts, 12 VDC, 2 A max.
Dimensions (H x W x D)
4.6 x 8.2 x 0.816 in. (11.6 x 20.7 x 0.2 cm)
Wiring
A 10-wire quick-connect plug-in cable is provided for interfacing the D279A with the
Control/Communicator and the protective loops. 22 AWG (1.2 mm) or heavier
gauge wire required to connect the loops and control/communicator to the ten
flying leads.
5
Ω
maximum resistance on common. 20
Ω
maximum resistance on all other runs
between the D279A and the panel.
Operating Temperature
32 F to 122 F (0 C to 50 C)
Non-condensing Relative
Humidity
5% to 85% at 86 F (30 C)
Table 3: D279A Spefications
2.2
Features
• Permits independent arming and disarming of a single control/communicator zone or point
• A 4-digit, user-programmable combination
• Built-in panic function
• Preprogrammed entry and exit delay times
• Individual annunciation of delayed and instant loop status
• Panic and burglary alarm signals to control/communicator
• Form C relay activation on alarm
• Keypad back-lights when number keys or the command bar are pressed
• Plug-in cable included for simple wiring to the control/communicator
• Low-profile surface mount enclosure
