Power supply:  6 Volts (4 batteries, type AA, R6 or equivalent).  Look at the sell-by date on the batteries (Fig. 6).

* Alkaline batteries recommended.

* 4 digits user code.  6 digits programmable when function 1 is ON.

* Automatic blocking system for 5 minutes when more than 10 consecutive incorrect codes are entered.

* Low batteries warning system.

* Inside easy access to replacement of batteries.

* EEPROM memory circuit, which stores data for more than 40 years, with no need to have it connected to the batteries.

* User friendly signalling system of beeps and leds that makes its use easy and convenient for handicapped.

* More than 5.000 openings with new batteries.  Replace the batteries every year for correct functioning.

* One user code plus two EMERGENCY CODES including one master code for the manager (manager code).

* Special Emergency key provided.

* External power supply, to open your safe in case the batteries are completely discharged.

* Time delay function one of the emergency codes (master 2): from 0 to 9 minutes time delay.