Smoke and Carbon Monoxide Detector Powered by Battery with Digital Display, Dual Alarm Sensor of Smoke and CO,Easy to Install

Smoke and Carbon Monoxide Detector Offering Excellent Security: Making a Loud Alarm (85 d – B) When It Detects a Buildup of Smoke or Carbon Monoxide, and Instantly Alert Those In Danger. Built-in Electrochemical Sensor with High Accuracy and Infrared Photoelectric Sensor Helping to Reduce False Alarms. Carbon Monoxide Detector and Smoke Alarm Providing Whole-day Protection. Battery-powered Unit Can be Installed Quickly and Easily without an Electrician. *SPECIFICATION* /b br *Power supply: DC 4.5V (3*1.5V AA Batteries) br * Standby current:≤98u – A br *Alarm current: ≤75m – A br *Alarm sound: ≥85d – B (1m) br *Sensor type: Photoelectric sensor & Electrochemical CO senso br *Low battery warning: 3.6V br *Temperature range: 0°C~49°C (32°F~120°F) br *Humidity: ≤95%RH (No icing or condensation) br *Dimension:Φ115(D) x 38(H)mm br *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. br *Executive criteria: UL217; BS5446 br