Roberts Radio CR99712 - Manual (Page 16)

Auto dimmer
The dimmer sensor is located on the front of the clock radio which will
adjust the intensity of the clock display to suit room brightness.
Back-up battery
As with all batteries, eventually the built in lithium battery will need to be
replaced. A number of factors, such as the length of time between the date
your clock radio was manufactured and the date you plugged it in for the
first time, determine the amount of time before battery replacement. During
this initial storage period the lithium backup battery is supplying power to
your clock radio’s computer memory. Once you connect your clock radio
to the household AC mains supply the battery no longer supplies power
to your clock radio’s computer memory. A fresh backup battery can supply
power to your clock radio’s computer memory for 3 years even if it is never
connected to a mains supply. If your clock radio was connected to the
AC mains supply within a few months after it was manufactured and you
experience only short interruptions to the mains supply, your battery may
last for up to 5 years or even longer.
When the battery drops below a certain level the Low battery indicator
will light. When you see this indicator you should change the battery as
soon as it is convenient to do so.
See following page for details on battery replacement.
Battery should not be exposed to excessive heat such as sunshine,
fire or the like.
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