ULC-S533-02

1. Scope 1.1 This standard shall apply to egress door securing and releasing devices to perform the function of holding a door in the closed position and releasing the door to permit free egress when operated. Egress door securing and releasing devices are considered ancilliary devices and are not an integral part of the fire alarm system. 1.2 This standard covers requirements for egress door securing and releasing devices for use in accordance with the Standard for the Installation of Fire Alarm Systems, CAN/ULC-S524, and in accordance with C22.1, Canadian Electrical Code, Part 1, Safety Standard for Electrical Installations. 1.3 These requirements cover devices for use in ordinary (non-hazardous) indoor locations and locations opening to the outdoors. 1.4 Devices for use in hazardous locations shall comply with the requirements of this Standard and the applicable requirements of C22.1, Canadian Electrical Code, Part 1, Safety Standard for Electrical Installations, with respect to the location hazard.