[Powerful function] This portable Co gas monitoring tester can continuously monitor the concentration in surrounding environment. Make sure to detect excessive and remind operator take relevant measures. [Precision durability] high-precision detector has an automatic calibration function. measurable range is 0~1000ppm (accuracy 1ppm). It use two temperature units (鈩?鈩? (temperature range: 32~122鈩?0~50鈩?. shell of made high-quality Abs engineering plastic, which comfortable contact, strong durable. service life sensor product as long 3 years. [Practical design] small size (5.39 X 1.97 1.04 cm), light weight (0.25 pounds (about 0.1 kg), easy carry operate. Even dark other harsh environments, you easily high-definition Lcd backlight Screen. addition, set whether turn on shutdown (when function turned on, if there no operation for 10 minutes, will automatically off save power). [Application range] carbon monoxide characteristics wide measurement range, high accuracy, size, convenient carrying operation. widely used coal, petroleum, textile, chemistry, metallurgy, paper making, fire protection, municipal administration industries. Colour: shown Material: plastic Package Contents: 1 * Meter Only above content, products are not included. Note: reflection different displays may cause color item picture a little from real thing. allowed error +/- 1-3cm.