Note:
R“Battery dead” may be displayed when there is radio interference or the key
detector is out of range of the handset.

Replacing the battery

CR coin cell lithium battery performance
(supplied battery)
6 months max.*1
*1 Actual battery performance depends on usage and ambient environment.
Note:
RWe recommend you check the battery once a month and replace the battery
regularly so that you can use the key detector anytime.
RAfter installing the replacement battery, the key detector emits a registration
tone for 30 seconds. Wait until the tone stops. You do not need to register the
key detector to the unit again.

Deregistering a key detector

1Handset:
For key detector 1: MMENUN#6581
For key detector 2: MMENUN#6582 *1
For key detector 3: MMENUN#6583 *1
For key detector 4: MMENUN#6584 *1
*1 If you have 2 or more key detectors.
2MbN: “Yes” a MSELECTN a MOFFN
Troubleshooting
Problem Cause/solution
The desired key detector
does not work.
or
I cannot locate and find the
key detector.
RMake sure the battery is installed correctly
(page 3).
RChecking the battery (page 5).
RThe battery is dead. It is time to replace the
battery.
RThe key detector is out of range. Check the
range guidelines (page 5).
6
Installation
TGA20(en-en)_1201_ver022.pdf 6 2012/12/01 19:54:54