The unit comes with 1 CR2450 back-up battery installed to provide continuous alarm
operation and clock settings in the event of a power failure.
Remove the battery pull
tab before use
. When the Battery Low Icon located on the right side of the display is
flashing, it is time to replace the back-up battery. The battery compartment is located
on the bottom of the unit.
1. Please make sure the unit is connected to AC power source, otherwise all settings
may be lost during battery replacement.
2. Use a Phillips screwdriver to remove the battery compartment cover located on the
back of the unit. Remove exhausted CR2450 battery.
3. Insert a fresh CR2450 battery, checking that the + side is facing you. Replace the
compartment door.
Note
: Make sure you dispose of battery properly (see your local regulations).
WARNING
: Lithium batteries can explode or cause burns if disassembled, shorted,
recharged, exposed to water, fire, or high temperatures. Do not place loose batteries in
a pocket, purse, or other container containing metal objects, mix with used or other
battery types, or store with hazardous or combustible materials. Store in cool, dry,
ventilated area. Follow applicable laws and regulations for transport and disposal.
Replacing Back-up Battery
Using Sleep Mode
Sleep mode lets you sleep to the current radio station, gradually lowering the volume until the unit shuts off at the selected time.
Press the
Sleep Button
as needed to select an amount of time before the unit shuts off: 120, 90, 60, 30 or 15 minutes, or
Off to exit sleep mode and shut the unit off.
Using the Dimmer
Press the
Snooze/Dimmer Button
during normal operation to adjust brightness of LCD display. There are several levels of
brightness including OFF.
5
Using the RT212
Installing Backup Battery
