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Maintaining your system
The components of your security system are designed to be as maintenance-free as possible. To make sure
that your system is in working condition, do the following:
1. Test your system weekly.
2. Test your system after any alarm occurs (see the TESTING THE SYSTEM section).
Low Battery Conditions in Wireless Sensors
Each wireless sensor in your system has a 9-volt or 3-volt battery. The system detects low battery conditions
in wireless sensors, including smoke detectors, personal emergency transmitter, and the portable wireless
keypad, and displays a “LOW BAT” message on the master keypad, which also beeps. A low battery in a
wireless keypad is detected as soon as one of its keys is pressed, and the master keypad (e.g. Ademco 5827)
will display “00”. In addition, a wireless smoke detector with a low battery also emits a "chirp" sound
approximately once every 20–30 seconds, identifying itself as the smoke detector with the weak battery.
NOTE: A low battery message means that battery replacement in the indicated sensor(s) is due within 30
days. In the meantime, a sensor with a low battery is still operational.
To silence Low Battery Warning Tones at the Keypad: Press the
OFF
key.
The low battery message display will remain on as a reminder. When you replace the weak battery with a
fresh one, the sensor will send a "good battery" signal to the control when the sensor is activated
(opening/closing of door, window, etc.).
To clear the “LOW BAT” message enter:
+
OFF
key.
Your user code
When replacing batteries, use only those recommended by your installer.
Alkaline batteries provide a minimum of 1 year of operation, and in most units and applications, provide 2–4 years of service. 3-volt
lithium batteries may provide from 4-7 years of operation. Actual battery life will depend on the environment in which the sensor is
used, the number of signals that the transmitter in the sensor has had to send, and the specific type of sensor. Factors such as
humidity, high or low temperatures, and large swings in temperature may all lead to the reduction of actual battery life in an
installation.
Changing the ReadyGuard-REN System Battery
In the event of an AC power loss, the ReadyGuard-REN is powered by a rechargeable, nickel-metal hydride
battery pack. The battery pack should be replaced when a “LOW BAT” message with no zone number is
displayed.
NOTE: The battery pack (P/N LYNXRCHKIT-SC or LYNXRCHKIT-HC) should be changed every
four years and must be replaced by a qualified service technician.
Following battery pack replacement, rechargeable batteries may take up to 48 hours to charge. The “LOW
BAT” message may be displayed after one minute, however it should clear within 4 hours or by entering
Test Mode.