KETOTEK Air Quality Monitor Indoor, CO2 Detector, CO2 Monitor with Alarm Temperature Humidity

Technical Specification:
· CO2 concentration measurement range: 400~5000PPM, Temperature measurement range: -9.9°C~50°C/14.2°F~122.0°F, Humidity measurement range: 1%~99%RH.
· Measurement accuracy: ±1°C/±2°F. ±3%RH, ±5%+50ppm. Refresh frequency: 5 seconds.
· CO2 concentration audio alarm and colour air quality level indicator.
· Display of 24-hour average CO2 concentration histogram.
· Supports manual baseline calibration and automatic baseline calibration of CO2 concentration.
· Records maximum and minimum values of temperature, humidity and CO2 concentration.
· Backlight brightness is adjustable and can be switched off.
· Low battery display.
· Temperature units can be converted between °C and °F.
· Time, alarm clock and snooze functions. Can be set in 12 hour or 24 hour format.
· Requires power supply connection. Power supply: DC 5.0V 600mA.