Chauvin Arnoux CA 895 [P01651001Z] Gas Detector, Carbon Dioxide (CO2), 0 - 1000 ppm. This gas detector is used for accurately determining the level of CO (carbon monoxide) in combustion devices. Small in size, easy to operate and ideal for various different applications, the CA895 is able to measure CO levels between 0 to 1000ppm and features built-in alerts that tell the user that unbearable levels of CO have been detected in the environment. The CA895 features two measurement modes; normal and average. The normal measurement detects the CO source, while the average mode is used to determine a much more accurate measurement overall. In addition to general CO functions the CA895 can also detect the maximum CO value detected, includes a data hold function for storing the last value on screen and comes in a protective, shock-proof sheath. The Chauvin Arnoux CA 1510 Indoor Air Quality Tester is an easy-to-use and ergonomic air quality monitor available in black or white.