Product Name: Jbe Fire Alarm White Battery Photoelectric Smoke Alarm Detector Model NO.: TSS913A Infrared Sensor Installation: Ceiling Types of Smoke Detectors: Photoelectric Smoke Style Type: Smoke Detectors Power Source: DC 9V External Battery Quiescent Current: <=8ua Alarm Sensitivity: 0.09-0.15dB/M Comply with Standard: En 14604:2005/AC:2008 Alarm Current: <=16mA Alarm Volume: >85dB(a) @ 3 Meters Low Voltage Threshold: <=7.5V Hush Time: 10minutes Product Service Life: >10 Years Humidity Range: < 95% Relative Humidity (Rh) Temperature Range: -10c to 50c Size: 100.8mm in Diameter X 36.7mm Depth Trademark: JBE Specification: White Origin: Zhejiang, China Product Description Theunitis a photoelectric smoke alarm device.With the photoelectric technology, it is more sensitive to detecting slow smolder fires which general thick, black smoke and may smolder for hours before bursting into flames. The smoke alarm devicedoesnot contain the radioactive material which is harmless to the environment.Power SourceDC 9V External batteryQuiescent Current<=8uAAlarm Sensitivity0.09-0.15dB/mComply with standardEN 14604:2005/AC:2008Alarm Current<=16mAAlarm Volume>85dB(A) @ 3 metersLow Voltage Threshold<=7.5VHush time10minutesProduct service life>10 yearsSize100.8mm in diameter x 36.7mm depth