CAN/ULC-S526:2016 is a binational standard fully harmonized with ANSI/UL 1638, Visbile Signaling Appliances - Private Mode Emergency and General Utility Signaling, that can be used for Canada and the United States.

This standard applies to visual signaling devices intended for ordinary (non-hazardous) indoor and/or outdoor installation:
a) In Canada, in accordance with CSA C22.1, Canadian Electrical Code, Part I, Safety Standard for Electrical Installations; and with CAN/ULC S524, Standard for Installation of Fire Alarm Systems; and
b) In the United States in accordance with the National Electrical Code, NFPA 70, and the National Fire Alarm and Signaling Code, NFPA 72.