DUAL-824: 24-Channel, 8-Loop Supervised Wireless/Hardwire Security Panel (Discontinued)

The Model DUAL-824 24-Channel, 8-Loop Supervised Wireless/Hardwire Security Panel is a hybrid alarm control that includes its own built-in superheterodyne receiver with a measured range of 1,500 feet. Because the receiver is located inside the control panel cabinet, installers do not have to take the time to find a separate place to mount it.

User controls for the DUAL-824 are centralized on an easy-to-read, backlighted, full-function Model DUAL-824KP keypad with numeric indicators for each of 24 supervised wireless sensor zones and up to eight hardwire loops. The DUAL 824 supports the addition of a second hardwire keypad. A built-in speaker generates alert and alarm zones.

The DUAL-824 panel is housed in a high-impact plastic box, with room for a rechargeable backup battery. The DUAL-824 has six operating modes and can be configured for one-button operation, for eight user codes (including duress).

An optional Model VB-2 plug-in board adds valuable communications capabilities, including voice prompts, touch-tone telephone access, and a two-way voice link for central station monitoring.

Compatibility with industry’s widest line of transmitters and sensors (Linear’s supervised DXS series and non-supervised DX series) means that systems can be easily tailored by site and by need. Available models include door/windows, smokes, glass breaks, bill traps, keypads, and single and multi-channel personal transmitters in a variety of styles (handhelds, pendants, minis, and wristbands).

Installation and programming are made easy by Linear’s RA-2400 remote access software.


  • 24 supervised zones with up to 8 hardwire loops
  • 12 VDC output to power most popular security devices
  • High impact plastic control panel cabinet
  • Easy to mount, with plenty of room for wire and battery
  • Easy-to-read, backlit control station
  • Up to 1,500-foot reception range
  • Installation and programming ease
  • Reduced potential for false alarm
  • Plug-in voice board Model VB-2 option
  • Supports two supervised hardwire control stations
  • Superheterodyne receiver is integral with panel
  • Supports a rechargeable back-up battery
  • UL Listed
  • RF frequency: 315 MHz
  • 11.5″ W x 12.5″ H x 4″ D
  • Order number: SSC00056
Accessories for use with the DUAL-824
Model Description
LA-P External Antenna Kit
RJ-ADAPT RJ-31X Telephone Adapter
RSM-2 Remote Speaker/Microphone
VB-2 2-Way Audio and Remote Command Module with Voice Prompts
Models compatible with the DUAL-824
Model Description
DXS-10 Supervised Remote Keypad
DXS-21 Supervised 2-Button, 1-Channel Handheld Transmitter
DXS-23 Supervised 3-Button, 4-Channel Handheld Transmitter
DXS-31 Supervised Universal Door/Window Transmitter
DXS-32 Supervised Miniature Door/Window Transmitter
DXS-54 Supervised Passive Infrared Motion Detector Transmitter
DXS-73 Supervised Photoelectric Smoke Detector Transmitter
DXS-81 Supervised Bill Trap Transmitter
DXS-91 Supervised Glass Break Detector Transmitter
DXT-21 2-Button, 1-Channel Handheld Transmitter
DXT-23 3-Button, 4-Channel Handheld Transmitter
DXT-41 1-Button, 1-Channel Key Ring Transmitter
DXT-42 2-Button, 3-Channel Key Ring Transmitter
DXT-61A 1-Button, 1-Channel Pendant Transmitter
Operating Voltage: 120 VAC, 60 Hz
Transformer: UL listed, Class II, plug-in, 16 VAC, 1.25 A (supplied)
Back-Up Battery: 4.0 Amp-hour, 12VDC (not supplied)
Type: superheterodyne
Operating Frequency: 315 MHz, ±125KHz
Sensitivity: -100 dB minimum
counterpoised bipolar design
Compatible RF Formats: Linear DX, DXS
Radio Zones:
24 supervised
Hardwire Loops: 8 supervised
PAC Codes: 8 total, including Duress, Installer, Paging, and 5 User
Operating Modes: Off, Chime, Home, Home Instant, Away, and Test
Sensor Types: 11 including Automation, Emergency, Panic, Fire, Perimeter, Exit/Entry, Interior, Chime Only, Arm/Disarm A, Arm/Disarm B, and Environmental
Auxilliary Outputs: Automation, External, Console Speaker, and External Alarm Siren
Memory: EEPROM retains system programming during total power failure
Operating Temperature: 32° to 120° F (0° to 49° C)
Dialing: DTMF or pulse dialing
Reporting Formats: 4 x 2, 20 PPS, or Ademco contact ID
Telephone Numbers: primary, secondary, and supervisory (paging): Reports: full zone reports, console reports, general system reports, forced arming, and duress PAC
NOTE: paging application uses the supervisory telephone number to access the pager
Auxiliary Power: 12 VDC@ 1 amp maximum for auxiliary devices
24 red zone condition indicators, plus power on, radio, battery, ready, armed, trouble, and five system operating mode indicators
Built-in Audible: Piezo device for alarm tone (not to be considered as a substitute for an alarm sounder) keypad and status prompts
Keypad Wiring: Standard keypad configuration: 4 wires standard
for +, -, data in, data out
Dimensions: 11.5″ W x 12.5″ H x 4″ D

Installation Manual