Circuit for normally closed /opened rely contacts,have good quality ,easy operate,simple installion.

smoke alarm is that to prevent fire.They have own perfect quality, attractive appearance, steady performance,ect.

                         

                                 smoke alarm  AK-218A2Description:* Power Source : 9V battery,12VDC/24VDC* Operating Current : 10 uA (normal) and 20-50 mA(alarm working)    KM 53166.    0.81~1.42%/FT

    Operating Temperature: 40oF - 100oF (4. 4C - 37.8oC)

    Ambient Humidity : 10% - 90%.    Horn Level: 85 Decibels at 10 feet.* Battery life:1 year * Interconnecting Gas detector     (1)Circuit for normally closed rely contacts   (2)Circuit for normally opened rely contacts  (3)Operating Frequency: 433 MHZ/315MHZ (optional)* Size:105mm*25mm* Weight:150g/pc * Package size:58.5cm*42.5cm*30.6cm* Quantity/Box:80pcs......Welcome to China and visiting our factory!There are four models for smoke detectors in our factory,if you want to know more informations,please contact joy,thanks.   

chamber for smoke detector