Extech CO2 Humidity Temperature Data Logger SD800

Monitors carbon dioxide concentration (CO2) Maintenance-free two-wavelength non-dispersive CO2 infrared sensor (NDIR) Triple LCD display simultaneously shows CO2 concentration, temperature and relative humidity CO2 from -0 to 4,000 ppm; temperature from 0 to 50 °C; humidity from -10 to 90% RH Stores the readings on an SD card in Excel format for easy transfer to a PC