An audible tone will also alert personnel. The backup battery is constantly being float-charged by a regulator in the AC power supply. All program entries are easily and quickly made through the key pad on the Master Clock front panel. An entry code lockout can be used to prevent unauthorized changing of critical stored data. This mode allows the Master Clock to be set at correct time, and changed for Daylight Savings Time.
Correct time is displayed and incremented on the front panel.
For entering the correct day of the week. Allows entry of date into the master unit memory. Read out includes month, day and year. The unit is preprogrammed to advance date correctly through 2099, including leap years. Bell Schedule Select.