Emerson Radio CKD9901 - Manual (Page 7)

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Battery Back Up System
This unit uses a single 9-Volt battery (not included) to maintain the time and alarm
settings in the event that it is accidentally unplugged, or you experience a temporary
power failure. We recommend that you install a well-known brand of Alkaline battery
for longest life and best performance. To keep the battery back up system operational
you should install a new battery every 6 to 9 months. Some people find it convenient
to replace the back up batteries in their alarm clocks, clock radios, and smoke
detectors too, at the beginning and end of Daylight Saving Time.
To install the back up battery, turn the unit upside down, and
1.) Press on the small tab to remove the battery door.
2.) Connect the battery to the battery terminal, push the battery back into the
compartment and replace the battery door.
If the power is interrupted the clock display will go off but the battery will maintain
the clock and alarm time settings. When power is restored the time display will be
correct and your alarm setting will also be maintained.
If you notice that the time display is completely wrong you probably experienced a
power failure with a weak or exhausted battery in the compartment. Reset the
clock and replace the battery as soon as possible.
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