INSTALLATION
INSTALLATION
BACKUP BATTERY
If the power fails or you unplug the 7500AI, a 9V backup battery would save the messages and the settings for the day, time and security code. We recommend you use an alkaline battery.
Disconnect the telephone line and power line cords before replacing the battery. Always use a new 9V battery for optimum performance.
Follow these steps to install the backup battery.
1.Use a Phillips screwdriver to remove the screw on the compartment cover.
2.Push down the latch to release the battery compartment cover.
3.Snap the battery’s contacts firmly to the battery connector, then
place the battery into the compartment.
4.Replace the cover and secure it with the screw.
Dispose of old battery promptly and properly.
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