DSC WS4939 Operating Instructions

WS4939 Wireless Key

Operating Instructions

Congratulations on the purchase of the WS4939, DSC's newest 4
button wireless key. This key will allow you to arm and disarm, as well
as other keypad functions with the convenience of wireless portabil-
ity. Together with your installer, you can decide which functions you
wish to have accessible from your portable key.
To activate, press and hold the appropriate button for approximately
1 second*. The LED located between buttons 1 and 2 will confirm
that a signal has been sent to the control panel receiver.
*False Alarm Prevention
By default, the
and hold for approximately 3 seconds. This was designed to reduce the possibility of a
false alarm
NOTE: Signals will not be received if the key is not within the range of the wireless receiver.
The default functions are as follows:
Stay Arming
Press this button to arm your system in the Stay mode. All perimeter
zones will be armed, such as all window and door contacts, but the inte-
rior zones will remain inactive, allowing you to stay on the premises with-
out setting off an alarm.
Away Arming
Press this button to arm your system in the Away mode. Both the interior
and exterior zones will be armed, allowing you to exit the premises.
Disarm
Press this button to disarm your system. You do not have to enter your
access code when you use the key to disarm the system.
Panic
Press this button to notify your central monitoring station of a situation
requiring the police, such as a break-in.
Other options are available. Please discuss all WS4939 options with your installer in order
to program the best possible combination to suit your needs. As well for your conve-
nience an optional rubber button insert has been included.
Replacing the Batteries
Under normal conditions the batteries can last from 5 to 8
years. During each button press the key will send the status of
its battery to the control panel receiver. If the battery is low the
trouble light on the controls panel's keypad will turn ON.
To replace the battery, remove the top cover by inserting a coin into
the slot located on the bottom right corner and twist. Remove the screw at the center of
the board to expose the batteries. Replace both batteries with Panasonic CR-2025 lithium
batteries (see above diagram).
NOTE: The polarity of the battery must be observed, as shown in the diagram above.
Improper handling of lithium batteries may result in heat generation, explosion or fire,
which may lead to personal injuries.
key is a panic key. It will require the user to press
LED
+
Panasonic
CR2025
3V