Exam (elaborations)
F-78 inspecting, cleaning & testing of smoke detectors latest version graded A+
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F-78 inspecting, cleaning & testing of smoke detectors latest version graded A+ Standard provided by Underwriters Laboratory (UL) Addresses system smoke detector is UL268 Central station A facility that receives alarm signals then retransmits it to the FDNY. Nuisance alarm An alarm ...
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