The ACC520 is a Fail Safe strike lock making it ideal for emergency exits. They work by keeping the door locked until power is cut when an emergency exit button is pressed or the building loses power. When the this happens the doors will unlock allowing staff and visitors to safely leave the building.

This example shows a the ACC520, when the button is activated, power supply then releases power from the lock, and if power is lost then the lock also releases.

Connect the control device and power to the lock via an access control panel, relay or exit button so that the power can be cut when triggered.

For a Fail Secure setup the ACC518 strike lock works the opposite way to most electronic locks as they are designed to lock the door when their power is cut.

The lock can also be connected to a HRM250 - 10 function relay. A custom set length of time can be set for how long the power is cut from the lock. This allows for installations where the exit button isn't situated next to the door and a timed released is required.