The Carbon monoxide gas detector is a portable detector for detecting carbon monoxide (CO) gas. It can continuously monitor the CO gas concentration in the surrounding environment, once the gas concentration reaches the level of the alarm, the alarm will sound, light. High precision portable CO gas tester with compact size and light weight is easy to carry and operate. It is widely used in petroleum, chemical, coal, metallurgy, paper, fire, municipal, telecommunications, food, textile and other industries. Features: Portable detector for detecting carbon monoxide(CO) gas. Can continuously monitor the CO gas concentration in the surrounding environment. Sound alarm works when CO gas concentration reaches the level of the alarm. Compact size, light weight, easy to carry and operate. Professional and accurate measurement. Large LCD display and / switch. Can set concentration of alarm value. Auto power off in 10 minutes without any operation. Specifications: Brand Name: SMART SENSOR Color: Orange + Black Material: ABS Plastic Sensor Type: Stablized Electrochemical Gas Specific (CO) Detection Gas: Carbon Monoxide (CO) Temperature Measurement: Ambient Temperature Display Unit: CO: ppm, Temperature: / Measurement Range: CO: 01000PPM, Temperature: 050 / 32122 Resolution: CO: 1PPM, Temperature: 0.1 / 0.1 Accuracy: CO:±5% or ±10PPM, Temperature: ±1.5 Response Time: <60s Alarm: Sound & Light Alarm Alarm Point: 24PPM Preset (Adjustable) Battery Type: 3 * AAA 1.5V Alkaline Batteries (NOT Included) Operating Temperature: 050, Relative Humidity 1%99% Storage Temperature: -3060, Relative Humidity: 1%99% Item Size: Approx. 135 * 50 * 35mm / 5.31 * 1.97 * 1.38in (L * W * H) Item Weight: Approx. 89g / 3.13oz Package Size: Approx. 21.5 * 15 * 5cm / 8.46 * 5.91 * 1.97in (L * W * H) Package Weight: Approx. 127g / 4.48oz Package List: 1 * Carbon Monoxide Meter 1 * User Manual