Sony TAM-2000 Manual De Instrucciones página 11

■ Backup duration-
The supplied (manganese) batteries provide backup power if an
AC power failure occurs. The backup duration is approximately
7 hours.
■ When the backup batteries become weak-
The POWER indicator flashes.
The indicator also flashes when no batteries are inserted while the
answering machine is connected to an AC outlet
Setting up \
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