2 Pack Combination Smoke and Carbon Monoxide Detector Battery Operated Portable Smoke and Co Alarm for Home Bedroom Travel

PACKING LIST 1. smoke and carbon monoxide alarm 1 pcs 2. installation bracket 1 pcs 3. instruction manual 1 pcs 4. (3*1.5V AA Batteries) 1 pcs 5. installation screw 2 pcs 6. plastic tube each 2 pcs SPECIFICATION ?Power supply: DC 4.5V (3*1.5V AA Batteries) ? Standby current:?98uA ?Alarm current: ?75mA ?Alarm sound: ?85dB (1m) ?Sensor type: Photoelectric sensor & Electrochemical CO senso ?Low battery warning: <3.6V ?Alarm sensitivity. CO alarm sensitivity & time: 70ppm, alarms within 60-180minutes; 150ppm, alarms within 10- 50minutes; 400ppm, alarms within 4-15minutes; 700ppm, alarms within 2-6minutes. ?Temperature range: 0°C~49°C (32°F~120°F) ?Humidity: ?95%RH (No icing or condensation) ?Dimension:?115(D) x 38(H)mm ?Executive criteria: UL217; BS5446