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: or Measurement Range: CO: 01000PPM, Temperature: 050 or 32122 Resolution: CO: 1PPM, Temperature: 0.1 or 0.1 Accuracy: CO: 5 percent or 10PPM, Temperature: 1.5 Response Time: 60s Warning: Sound Light Warning Warning Point: 24PPM Preset (Adjustable) Battery Type: 3 x AAA 1.5V Alkaline Batteries(not included). Operating Temperature: 050, Relative Humidity 1 percent 99 percent Storage Temperature: -3060, Relative Humidity: 1 percent 99 percent Item Size: Approx. 135 x 50 x 35mm or 5.31 x 1.97 x 1.38in (L x W x H) Item Weight: Approx. 89g or 3.13oz Package Size: Approx. 21.5 x 15 x 5cm or 8.46 x 5.91 x 1.97in (L x W x H) Package Weight: Approx. 127g or 4.48oz Package Included: 1 x Carbon Monoxide Meter 1 x English User Manual.