RCA 29292 manual

NOTE: Alkaline (NEDA 1604A) batteries are recommended. Carbon-zinc (NEDA 1604) batteries may be used but memory holding time will be substantially reduced. Memory holding time for a fresh alkaline battery is approximately 8 hours (if Wake System is not activated), which should take care of short, nuisance-type AC power failures. To preserve battery life, the phone should remain plugged into an AC outlet. As the battery gets older, its voltage will drop and memory may be lost. Be sure to replace the battery periodically. Battery is not included with this clock phone.

All memory will be lost if the battery is not installed while the unit is unplugged for more than 60 seconds

IMPORTANT: If storing this unit for more than 30 days, remove the battery.

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