General description Portable carbon monoxide gas detector with a compact size and lightweight design, making it easy to carry and use. It continuously monitors the concentration of CO gas in the surrounding environment and features a sound and light alarm that activates when CO gas concentration reaches the alarm level. This detector is suitable for various industries, including petroleum, chemical, coal, metallurgy, paper, fire, municipal, telecommunications, food, and textile. Technical specifications Sensor: Electrochemical principle Gas detection: Carbon monoxide (CO) Measurement unit: PPM Measurement range: 0-1000 ppm Resolution: 1 ppm Alarm: Sound & Light Alarm points: Low: 35 ppm; Medium: 70 ppm; High: 200 ppm Operating temperature: 0-50 °C Humidity operating range: 15% - 90% RH (non-condensing) Power supply: 3 * 1.5V AAA batteries (not included) Item size: 11.5 * 6 * 2.5 cm / 4.53 * 2.36 * 0.98 in Item weight: 87 g / 3.09 oz Package size: Approx. 18.5 * 8 * 5 cm / 7.28 * 3.15