ULC 533

This Standard covers the physical and performance requirements for egress door securing and releasing devices that are intended to hold a door in the closed position and releasing the door to permit free egress when operated. Egress door securing and releasing devices are considered ancillary devices and are not an integral part of the fire alarm system.

These devices are intended to be used in accordance with CAN/ULC-S524, Installation of Fire Alarm Systems, in accordance with CSA C22.1, Canadian Electrical Code, Part I, Safety Standard for Electrical Installations, and as permitted by the National Building Code of Canada.