If you use more than one phone or other device on the line, add up all the RENs. If the total is more than five (or three in rural areas), your phone might not ring and your system might not answer. If ringer operation is impaired, remove a device from the line.
ˆInstallation
INSTALLING THE BACKUP BATTERY
If AC power fails or you unplug the system, one 9V alkaline battery (not supplied) is required to save any recorded messages and the settings for the day and time. For the best performance and longest life, we recommend a RadioShack alkaline battery.
Caution: Use a fresh battery of the required size and recommended type.
1.Use a Phillips screwdriver to remove the screw on the battery compartment cover and remove the cover.
2.Attach a 9V alkaline battery to the terminals and place the battery in the compartment.
3.Replace the cover and secure it with the screw.
Replace the battery when the LOW BATT indicator flashes while the system is connected to AC power.
Warning: Dispose of the old battery promptly and properly. Do not burn or bury it.
6 | Installation |