Performance-tested marks.Underwriters Laboratories Underwriters Laboratories Inc. is a U.S. not-for-profit, privately owned and operated product safety testing and certification organization. Based in Northbrook, Illinois, UL develops standards and test procedures for products, materials, components, assemblies, tools and , Inc., (UL) has three Security and Signaling Marks to identify products that are tested to perform as required in security and signaling environments. The marks signify sig·ni·fy v. sig·ni·fied, sig·ni·fy·ing, sig·ni·fies v.tr. 1. To denote; mean. 2. To make known, as with a sign or word: signify one's intent. that products have been specifically evaluated and tested to UL requirements. The Signaling Mark applies to products such as fire and life-safety alarms. The Security Mark applies to products such as intrusion Unauthorized access to a computer system or network. See intruder and IDS. detectors and surveillance systems. The combination Security and Signaling Mark is used on products that serve both security and signaling functions, such as a combination fire and burglar BURGLAR. One who commits a burglary. (q. v.) alarm system. The marks indicate that products have been tested and perform under many of the conditions that security and signaling products will encounter during the course of normal use. CIRCLE 71 ON READER SERVICE CARD |
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