Wizmart NB739 Smoke Alarm Detector Battery 9V

Wizmart NB739 Smoke Alarm Detector Battery 9V
Wizmart Smoke Detector 9V Self Contained Photoelectric Type
Model : NB739
Power Source : 9V Battery
Alarm response threshold : 0.10 dB/m - 0.16 dB/m
Visual alarm indicator : Red Led
Audible alarm sounder output :  ≥ 85 dB @ 3 m
Number of interconnected units : 38
Low battery signal : Audible signal each 30 s for 30 days
Operating temperature : 0 ◦C - +45 ◦C
Operating humidity : 10% - 90% RH, non-condensing
 
 
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