Electric interlocking: When any one of the door (inside or outside) is locked the other door will be forced to lock as well.

Alarm linkage: The alarm is interconnected with the one at the main frame, when the alarm is on, the two doors force lock at the same time. After locking, the doors cannot be opened by key, hand or electric control. (After the set alarm delay time, the normal function is recovered).

Force Locking: When there is an alarm, the force locking of the two doors can be disabled manually through double lock button on the controller of electric control lock, and cannot be opened by key, hand or electric control.

Sound and light indication: When opening any one of the doors (locks), the indicatorwill go on displaying the status of both the door and electric control lock , followed by the buzzer that will make sound to indicate，that the door is opened.

Emergency double opening: When receiving and sending the cash boxes in the morning and in the evening or under emergency (such as fire, toxic gas etc.), turn the switch of the electric control lock to “double opening”,then the two doors can be opened at the same time.

Passage limit: During the normal business time, when the staffs come in and out of the business room, the space of the passage only accepts the standing-room of one person so as to prevent law breakers from following into the business room. When receiving andsending the cash boxes in the morning and in the evening and whencarrying large articles needing several persons to come in and out, only set the controller on double openingand open the insideand outside doors at the same time, the passage will recover to the normal width of the door.