The XMS is a passive infrared motion detector specifically designed to release a magnetic lock from the inside for free egress. Unlike burglar alarm type detectors, the XMSìhas special features appropriate to this use. The lock control function is fail safe so that the magnetic lock will safely release if power is cut to the detector. A relay is also present to send a REX (request to exit) signal to an access control system (if one is present) and therefore shunt an alarm report. A time extension feature avoids the problem of the unit resetting if a person momentarily stops moving just before exit. Tight control of the exit detection pattern allows maximum security from the outside and avoidance of inadvertent activation from the inside.
Since egress from a magnetically locked door can be a safety issue, make sure you are complying with local building codes. Contact your building and/ or fire prevention department.