CO2 detector, can store 80,000 sets of data, and carbon dioxide concentration, temperature and humidity can be checked at any time. Support data recording, adjustable recording start and end time, and recording interval (hourminutesecond). It can be connected to WiFi and can be monitored online and detected at any time through APP. With audiovisual alarm, can set CO2 alarm value. If concentration exceeds set value, the tester will sound and change the brightness. Support the measurement of carbon dioxide concentration, temperature, humidity, dew point temperature, wet bulb temperature, time, date, etc., Manufacturer: ERETYRET