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UL 2525 Ed. 1-2020

Standard for Two-Way Emergency Communications Systems for Rescue Assistance

1.1 These requirements cover:  a) Discrete electrical products for rescue assistance two-way emergency communication systems, e.g. remote communications stations, master control units and accessories.  b) Electrically- and electronically-operated amplifiers that provide speech communication and distinctive sounds in conjunction with rescue assistance two-way emergency communication systems; and  c) Commercial stationary and fixed power supplies for rescue assistance two-way emergency communication systems, having input and output ratings of not more than 600 V, direct- and alternating-current, (DC and AC).  1.2 These requirements cover products to be employed in accordance with the following Codes and Standards:  a) National Electrical Code, NFPA 70;  b) National Fire Alarm and Signaling Code, NFPA 72;  c) Life Safety Code, NFPA 101;  d) International Building Code (IBC)/International Fire Code (IFC);  e) Building Construction and Safety Code, NFPA 5000;  f) Fire Code, NFPA 1.  1.3 The products covered by this standard are intended to be used in combination with other devices to form a rescue assistance two-way emergency communication system. These products provide all monitoring, control, and indicating functions of the system. An installation document(s) provided with the product describes the various products needed to form a rescue assistance two-way emergency communication system and their intended use and installation. This standard includes systems used for emergency communication in the following situations:  a) Exit stairs, stairways, or stair landings (Stairway Communications Systems)  b) Elevator lobbies and landings (Elevator Landing Communications Systems)  c) Occupant evacuation elevator lobbies (Occupant Evacuation Elevator Lobby Communications Systems)  d) Area(s) of Rescue Assistance or Area(s) for Assisted Rescue Communications Systems  e) Area(s) of Refuge Communications Systems  f) Other similar two-way emergency communications systems  1.4 These requirements do not cover:  a) Other initiating devices; nor do they cover notification appliances not provided as part of the product.  b) Emergency Responder Communications Enhancement Systems, UL 2524,  c) Communication systems, which are covered by the Standard for Hospital Signaling and Nurse Call Equipment, UL 1069.  d) Communication systems covered by the Standard for Emergency Call Systems for Assisted Living and Independent Living Facilities, UL 2560.  e) Fire alarm, emergency voice/alarm communication systems, and two-way in-building wired emergency services communication systems covered by the Standard for Control Units and Accessories for Fire Alarm Systems, UL 864.  1.5 These requirements do not include determination of compliance with regulations of the Federal Communications Commission (FCC). Should products covered by these requirements be required to comply with FCC regulations, a report of verification from the manufacturer is required as evidence of such compliance.

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Underwriters Laboratories [ul]

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