Combination Smoke and Carbon Monoxide Detector with Display Battery Operated Smoke CO Alarm Detector

SPECIFICATION: *Power supplied by DC9V battery (Note:The battery is not included) *Ionization Chamber: for fast flaming fires *Red LED indicate alarm *Unique “battery missing” lockout *Low battery alarm *Test Button *High sensitivity REPLACING BATTERY:battery section: 1.Battery rating voltage: DC 9V Package: 6F22 2.Size: 26mm*17mm*49mm 3.Recommend battery type: G6F22 (GOLDEN POWER) 4.Electro-Chemical system?Carbon Zinc Battery Jacket: Meta IMPORTANT: Do not attempt to remove the cover of clean inside the smoke alarm. This will avoid warranty.