fire detector 1.9V battery; 2.High alarm 85dB(3m) ; 3.Test button, LED indicator; 4.Low battery alarm; smoke detector PW-509S 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 surfaceProbes smoke which is generated by incomplete combustion at initial stage of fireSmoke detector consists of photoelectric system, signal processing identification and alarm circuitInfrared scatters on surface of smoke when smoke enters darkroom of detectorPhotoelectric diode receives scattered light and generates photoelectric signal currentPhotoelectric signal generates alarm signal after being processed by identification circuit, accordingly purpose of alarming is achievedSpecifications:

Material:	ABS plastic
Power supply:	9V battery
Quiescent current:	8μA
Alarm current:	16mA
Operating temperature:	-10°C ~ +50°C
Humidity:	0 to 95%(40±2°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

please contact with us for more information of this smoke detector, welcome to establish business relationship with our company.PEASWAY is one leading manufacturer of fire and security alarm products, with years of experience in developing and manufacturing high quality smoke, fire, toxic gas detection and air quality related products, our main products cover smoke detectors (smoke alarm), heat detectors (heat alarm), carbon monoxide detectors (CO alarm), gas detectors (gas alarm), water detectors (water alarm), please feel free to contact with us: sales at peasway.com

fire detector PEASWAY PW-509S with CE ROHS