Product 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 warning, the warning will sound, light. The carbon monoxide meter detects the precentage of carbon monoxide(CO) and measures concentration from 1 to 1000 parts per mililon(PPM). This meter indicates the precentage of carbon monoxide in two ways: 1.PPM reading on the LCD display. 2.Beeper tone. Specifications: 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 Warning: Sound Light Warning Warning 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 Included: 1 * Carbon Monoxide Meter 1 * English User Manual.