User's Manual

T4 Universal System Controller
6
docking station, the T4 will remain in sleep mode for 1 – 2 months
before shutting down. At that point the battery must be
recharged.
If the T4 battery capacity is reduced to approximately 25 percent,
the low battery LED located on the front bezel of the T4 will
illuminate red.
Alternatively, if the keypad backlights are programmed to be
disabled, a low battery icon will appear in the top center of the
display:
The low battery icon will change color to red if the battery
capacity becomes critically low:
At this point the T4 must be placed into the docking station to
recharge the battery.
The docking station LED illuminates red to indicate a charge in
progress. The LED will turn green when the battery in the unit is
fully charged.
A fully discharged battery will take approximately 4-5 hours to
completely re-charge.
The T4 can remain in the docking station indefinitely without
damage to the battery.