Product parameters
Working Voltage:DC12V               
Working Principle: Photoelectric detecting
Working Current: Static current less than 10uA,alarm working current:10-30Ma

Alarm Output: Relay output (Optional for turn on and off )
Smoke sensitivity: Comply with UL No. 217 standard,factory testing value is 3.2% Weak dust per feet,sensors reacted.

Operating environment: -5 ° C -50 ° C,10-90% non-condensing;
Buzzer sound volume: 85 dB at 10 ft;
install a smoke in the room with 25-40 square meters, Install smoke detector 0.5-2.5m above the important equipment 
Dimensions: 127mm (diameter) * 35mm (height).