ADEMCO Vista-20 User Manual page 36

Taking Care of
Your System
MAINTAINING YOUR SYSTEM
Replacing
Batteries in
Wireless
Sensors
w
The components of your security system are designed to be as maintenance-free as
possible. However, to make
sure that your system is in reliable working condition.
1.
Test your system weekly.
2. Test your system after any alarm occurs (see TESTING THE SYSTEM),
Each wireless sensor in your system has a 9-volt or 3-volt battery. The system detects
a low battery in any wireless sensor, including smoke detectors, the optional personal
emergency transmitter, and the optional portable wireless keypad. (A low battery in a
portable wireless keypad is detected as soon as one of its keys is pressed, and the
wired keypad will display "00".)
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 provide up to 4 or
more 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 or large swings in temperature, may all lead to the reduction of actual
battery life in an installation.
If you have a low battery in a wireless sensor, a low battery message is
displayed on the keypad.
In addition, a battery-operated smoke detector with a low battery also emits a single
"chirp"sound approximately once every 20-30 seconds, identifying itself as the smoke
detector with the weak battery.
Note:
The low battery message comes on as a warning that battery replacement in
indicated sensor(s) is due within 30 days. In the meantime, a sensor causing a low
battery indication is still fully operational.
Important: Use only batteries recommended by your installer as replacement.
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