Nautilus NH-1800 Operator's Manual page 123

NH-1800 6. Operator Functions
4) It will display the check sum of all
injected master key.
Fig. 6.53 CHECK MASTER KEY
Function Description
The CHECK MASTER KEY function is used to display the check sum of all injected Master Key. The
master key which is displayed as "_______" means it is in empty state.
6 - 80