smoke detector, smoke sensor, smoke alarm

Feature
Size: F132.5X43mm;
With cascade function Technical parameter
Operating voltage: AC 110V ~220V DC9V battery (6F22)
Surveillance current:(=10uA DC9V) (=30mA AC220V)
Alarm current:(=12mA DC9V) (=30mA AC220V)
SPL: =85dB(with 1 meter)
Temperature range:-10~50?
Humidity: =95%RH
Low voltage working time:7-15 days
Packing:
50PCS/boxes
N.W :12.405KG
G.W :13.015KG
CTN SIZE: 685*255*280mm
smoke detector, smoke sensor, smoke alarm