The dual 824 security system – Linear DUAL 824 User Manual
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CONTROL PANEL
The DUAL 824P Control Panel is the heart of the system. 
It monitors all of the system's wireless sensors, hardwired 
loops, and controls the alarm sirens and Model DUAL 824KP 
hardwired keypads.
The Control Panel constantly monitors the condition of the 
system's sensors and hardwired contacts, displaying which 
protected doors and windows are open or closed. If an 
alarm occurs, the keypads display which sensor(s) caused 
it. When a sensor has a low battery, the keypads display 
which sensor needs a new battery. Sensors that send hourly 
status transmissions keep the Control Panel informed of their 
operating condition.
Up to eight different custom user codes can be used to 
operate the system. For security, a user code must be 
entered to disarm (turn off) the system. The system can be 
armed (turned on) by entering a user code, or with the unique 
“Quick Arm” feature. The fi ve restricted user codes and the 
special page alert user code can only arm and disarm the 
system, no programming changes (except changing user 
and duress codes) are allowed. The master user code is 
allowed to program the Control Panel, and a duress code 
can be selected for emergency disarming of the system with 
a duress report to the Central Station. The page alert user 
code can dial a pager number to inform the pager wearer 
when the system is disarmed.
The Control Panel's memory will retain the user codes and 
all of the system's programming, even during a total power 
loss. An optional backup battery can be installed to power the 
system during short power failures.
The built-in digital communicator connects the Control Panel 
to a Central Alarm Monitoring Station through the telephone. 
With a monitored system, the central station can dispatch 
authorities in case of burglary, fi re or other emergency. The 
central station can also call family, friends, neighbors, or 
anyone else designated on a custom call list. System arming 
(closing) and disarming (opening) reports by user can also 
be sent.
Each sensor can report directly to the Central Station using 
the digital communicator's Point ID feature. If a sensor triggers 
an alarm or experiences supervisory trouble, a unique report 
code can be sent for immediate identifi cation of the event.
The optional Model VB-2 digital voice response module can 
be installed in the Control Panel. The VB-2 module provides 
three exciting features: 2-way audio monitoring capability at 
the Central Station through the communicator, local voice 
prompts from the keypad's speaker (with Model RSM-2 
speaker/microphone kit installed), and voice prompted 
remote system control using in-house or off-site pushbutton 
telephones.
The system has 24-hour capabilities that are always ready 
to operate, even when the system is disarmed. They can be 
triggered by buttons on the hardwired keypads, a wireless 
keypad, portable remote controls, carbon monoxide detectors, 
and smoke detectors. Pressing the EMERGENCY or FIRE button 
for two seconds will cause an immediate siren and call the 
central station. IMPORTANT: For personal emergency use 
only. Not for use as a UL Listed Medical Alert System.
The Control Panel's Environmental feature is active 24-hours 
and can be triggered with sensors connected to devices such 
as water fl ow detectors, over/under temperature sensors, fl ood 
sensors, etc. The Environmental feature activates the chime 
annunciator without sounding the siren. The Environmental 
feature does not send communicator reports.
An Automation Output in the Control Panel provides an 
easy way to connect external devices to the Control Panel. 
The output is fully programmable to activate on a variety 
of conditions, such as when the system is armed, during 
alarms, and during exit/entry delays. The Automation Output 
can connect to lighting control modules, relays, noisemakers, 
and indicators. The Control Panel's and wireless keypad's 
key and any system sensors can control the Automation
Output.
The Control Panel can be programmed locally using its own 
keypad or remotely, over the telephone, using Linear's Model 
RA-2400 Remote Access software program. The RA-2400 
upload/download program is a Windows
™
application that
runs on a personal computer and communicates with the 
Control Panel through a modem, connected directly to the 
panel, or through the telephone line.
1.
THE DUAL 824 SECURITY SYSTEM
DXS-91 GLASS
BREAK DETECTOR †
DXS-73
SMOKE DETECTOR
DUAL 824P
CONTROL
PANEL
DXS-10
WIRELESS
KEYPAD
DXS-31
DOOR/WINDOW
SENSOR
DXS-54
PIR
DXT-41 & DXT-42
REMOTES
DXT-61A
REMOTE †
DXS-81
BILL TRAP †
DXT-21 & DXT-23
REMOTES †
DUAL 824KP
HARDWIRED
KEYPAD
DXS-32 MINI
DOOR/WINDOW
SENSOR
DXS-62A
REMOTE
† NOTE: These accessories
are not listed by UL.
