Standby Operation - Isgus PERFECT 2040 Operating Manual

Standby operation

An optional standby battery pack is available to maintain normal operation of the time
recorder in the event of an AC power failure. If power does fail, the time recorder
transfers automatically to the batteries without any intervention by the user. When
AC power is restored, the time recorder automatically reverts to standard operation
and recharges the batteries.
The batteries will maintain normal time recorder operation for 24 hours and up to 300
time card punches.
During a power failure the following message is displayed:
AC POWER FAIL
The date is not displayed during AC power failures, only the time and the day of the
week.
However, all punching and programming functions will continue to operate.
5-24 Operation Chapter 5