3 In 1 Detector CO2 Monitor CO2 Meter Gas Analyzer Detector
3-in-1: This detectors equipped with 3 major air indicators of CO2 concentration(0~9999PPM), temperature(-29℃ to 70℃/-20℉ to 158℉), and humidity(0% to 100%RH) to protect your family. Carbon Dioxide Range: 0~9999PPM(out of scale).