Siemens HMS-S Intelligent Manual Fire-Alarm Box The Siemens intelligent manual fire-alarm boxes (Models HMS-S | HMS-SZ and HMS-D | HMS-DZ) provide the most advanced method of address programming and supervision. Each Model HMS-series manual box achieves the state of an ''intelligent-initiating device by incorporating custom microcomputer-chip technology with sophisticated, bi-directional communication capabilities with the panel, which include Siemens Modular, as well as Siemens 50-point, 252-point, and 504-point addressable FACPs. The Model HMS- series manual fire-alarm boxes are also included in US Coast Guard (USCG) approval for use in marine and other harsh environments, when used with the Siemens 252-point and 504-point USCG approved addressable system. Specifications Models HMS-S | HMS-SZ and HMS-D | HMS-DZ are constructed of durable, molded polycarbonate material that is matte finished in red with raised white lettering. The housing accommodates a pulldown lever, which when operated locks into position; indicating the fire-alarm box has been activated. The pull-down lever remains down / in the locked
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