A new type of audible notification signal was introduced in the 2012 version of NFPA 72 that employs a low-frequency sound — in the 520 Hz range — when appliances are installed where people sleep. If ...
In the last two columns, I’ve discussed the new sales opportunity for your company to begin offering directional sounders to supplement the fire alarm notification appliances you are already ...
BUFFALO GROVE, Ill.--(BUSINESS WIRE)--Siemens Industry, Inc., Building Technologies Division’s new Intelligent Voice Communication panels allow small and medium-size facilities to have full-featured ...
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