UL 2524 PDF

1 Scope

1.1 These requirements cover products (e.g. repeater, transmitter, receiver, signal booster components, remote annunciators and operational consoles, power supply, and battery charging system components) used for emergency responder communication enhancement systems installed in a location to improve wireless communication at that location.

1.2 In the United States – These requirements cover products to be employed in accordance with the following Model Building and Installation Codes:

1. a) Standard for the Installation, Maintenance, and Use of Emergency Services Communications Systems, NFPA 1221;

2. b) Standard for Emergency Services Communications, NFPA 1225;

3. c) National Electrical Code, NFPA 70;

4. d) Fire Code NFPA 1;

5. e) Life Safety Code, NFPA 101;

6. f) International Fire Code

7. g) Building Construction and Safety Code, NFPA 5000.

1.3 The products covered by this standard are intended to be used in combination with other products and devices to form an emergency responder communication enhancement system. An installation document(s) provided with the product describes the various products needed to form an emergency responder communication enhancement system and their intended use and installation.

1.4 These requirements address the safety, reliability and operational requirements prior to installation.

1.5 These requirements do not include determination of compliance with national regulations addressing electromagnetic radiation and use of radio frequencies. Should products covered by these requirements be required to comply with national regulations, a report of verification from the manufacturer is required as evidence of such compliance.

Summary of Topics

This new Third Edition of ANSI/CAN/UL 2524 dated March 22, 2024 includes the following changes in requirements:

– Correction to Polarity Reversal Test; 46.1

– Revised standard title to "Emergency Responder Communication Enhancement System"; 1.1, 1.3, 6.2, 6.10, 33.2, 36.1.1 – 36.1.3, 36.1.5 and 54.12

– Updated references to Model Building and Installation Codes; 1.2, Section 5 and 53.1.1

– Optical fiber technology and relaxation of enclosure requirements for equipment intended for indoor use/dry locations; 9.1.1

– Clarification of on-premises visual and labeled indications; 6.30, 36.1.3; 36.1.6; 34.2 and 34.3

– Update of Annex A – Standards for Components

– Addition of requirements for products intended to be installed outdoors; Section 49, Section 51, and 53.1.22

– Corrections to Section 28.3

– Clarification of maximum propagation delay; 34.4