Features:85dB loud alarm.Automatic three-stop, real-time detection of gas concentration.Widely used for gas leakage detection in home and commercial fields. The electrochemical sensor has a life of up to 5 years.LCD blue backlight display displays gas concentration.Low power consumption, long standby time. Powered by three No. 5 batteries, working for more than two years on standby. High-performance single-chip computer can detect low PPM concentration from accurate detection and algorithm.Low Voltage Alarm Function: Low Voltage Alarm promptly reminds you to change batteries, every 30 seconds issued a "hoot" sound, LCD display (Lb). Specifications:Material: ABSStatic Current: 80Ua, 200Ua (LCD is lit)Alarm current: 85mAPower supply: Three No. 5 batteries (4.5V)Alarm concentration/time: CO gas (50 ppm - 60 - 90 minutes; 100 ppm - 10 - 40 minutes; 300 ppm - less than 3 minutes)Alarm: 3 meters high decibel alarm (> 85dB), red LED flashing fastAlarm frequency: 3KHzUse environment: temperature: 4 - 38℃, relative humidity: 20% - 95% (without condensate)Size (Diameter): 100mm*38mm/3.9*1.5inPackage Weight: 165g/5.8ozPackage List:1 * Smoke Detector (Batteries Not Included)1 * Installation Kit1 * User Manual
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