offer LX-222 smoke detector

1.Photoelectric sensor 2. Power supply: DC9V battery 3.Option current: 20A 4.Alarm current 10mA 5.Alarm sonority 85db 6.Stakeout area 20 centiare 7.Working temperature 1045 8.Working humidity 95 RH 9. LED indicator 10.Product size 10.710.73.7cm