main features: battery operated or ac power with backup battery photoelectric sensing technology lower battery indication loud 85db audio alarm instant test button mcu processing test and hush button interconnection function 57℃(135℉)fixed temperature alarm . more...
Call points are used for fire alarm activation, evacuation, and process shut-down. Heat detectors are used in turbinegenerator skids, switchgear or motor control status rooms, and process tank areas or transmission lines. more...
Our dual sensor smoke alarm is independent Photoelectric smoke & heat alarm, main feature： 1.9v Battery operated for this (SR-820DHS) stand alone smoke detector 2.Infraed Photoelectric sensing technology 3.Lower battery indication 4.Loud 85dB audio alarm 5.Instant test button 6.MCU processing 6.Test and more...
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