ULC-S541-99

1. SCOPe 1.1 These requirements apply to speakers, rated at 300 volts or less, for fire-protective signalling service and intended for indoor and/or outdoor installation in accordance with the Canadian Electrical Code, Part I, and the Standard for the Installation of Fire Alarm Systems, CAN/ULC-S524. For requirements pertaining to audible signal devices, refer to ULC-S525, Standard for Audible Signal Devices for Fire Alarm Systems. 1.2 These requirements apply to speakers for use in ordinary (non-hazardous) indoor locations and outdoor locations. 1.3 Speakers for use in hazardous locations shall comply with the requirements of this Standard and the applicable requirements of the Canadian Electrical Code with respect to the location hazard. 1.4 Each speaker (or product) as defined by this Standard is a speaker assembly suitable for separate installation as a component of a fire alarm system. 1.5 A supplementary visual signal, incorporated as part of an audible signal device which is intended for fire alarm application, is covered by the applicable requirements in the Standard for Visual Signal Appliances, CAN/ULC-S526, in addition to the requirements of this Standard.