Some type of covering, such as a blanket or poncho should be used to prevent entry and
cut down on the effects of these corrosive elements.
A power reduction of 15% (97.75 V) for 115 volts ac operation or (195.5 V) for 230
volts ac operation will not hamper normal terminal operation.
Occurs when 12 volt dc battery backup power is applied to the terminal.
q When prime power reduction causes the internal +22 to +30 volts dc to drop to less
than 12 volts dc, the terminal automatically enters the Battery Backup Condition.
Occurs when either a message memory or keyboard failure occurs.