9v Battery Powered Smoke Alarm - (ce Rohs En14604)

We are offering smoke alarm.1.9v battery;
2.high alarm 85db(3m) ;
3.test button;
4.low battery warning,ce,rohs en14604
promotional smoke detector conforms with ul standard, and is used to detect smoke and fire.
pw-507s stand-alone ul smoke detector is under bsi approval, and can be calibrated into either ul, vds, nf standards. This smoke detector features ul-approved photoelectric sensing components with precise smoke detection. And long life (18 months) 9v battery operation (9v ultralifelithium battery model for 10-year life is available too).
smoke detector specifications/special features:
�features: �works on principle that infrared scatters on smoke surface
�probes smoke which is generated by incomplete combustion at initial stage of fire
�smoke detector consists of photoelectric system, signal processing identification and alarm circuit
�infrared scatters on surface of smoke when smoke enters darkroom of detector
�photoelectric diode receives scattered light and generates photoelectric signal current
�photoelectric signal generates alarm signal after being processed by identification circuit, accordingly purpose of alarming is achieved
�specifications:
material:
abs plastic
power supply:
9v dc block battery/pp3
quiescent current:
8î¼a
alarm current:
16ma
operating temperature:
-10â°c ~ +50â°c
humidity:
0 to 95%(40â±2â°c),no condensing or icing
alarm decibel:
louder than 85db at 10feet(3 meters)
test button:
to verify the proper functioning of smoke alarm
low voltage warning:
smoke detector beeps every 40 seconds for 30 days (minimum) to indicate a need of battery replacement
smoke sensitivity:
0.086 db/m to 0.140 db/m