Hama "Safe" Air Quality Measuring Device, CO2, 186434

Compact air quality measuring device for evaluating the concentration of carbon dioxide (CO2), incl. temperature and ambient humidity display
Suitable for indoors (e.g. living room, bedroom, children's room and office)
CO2 air quality display with the following fields: GOOD (green field = good air quality), NORMAL (yellow field = normal air quality) and POOR (red field = poor air quality)
Additional alarm sound at the red warning level of 1001 to 2000 ppm, which becomes more intensive as the quality deteriorates: provides a reminder to ventilate in order to reduce high carbon dioxide levels and therefore avoid difficulties concentrating, headaches and fatigue
Stores the minimum and maximum measured values of the CO2 concentration, temperature and ambient humidity
Temperature indicator can be switched between degrees Celsius and degrees Fahrenheit
Display of the ambient humidity in per cent
The rechargeable battery allows the device to be operated for up to 3.5 hours without a power supply
Battery status bar in 4 bars

Display Area CO2:  400 to 5000 ppm
Measurement Error CO2:  +/- 50 ppm
Sensor Type:  NDIR (Infra Rot)
Air Humidity Measuring Range:  20% to 95%
Display:  CO2 in ppm/Humidity in %/Max/Min CO2/State of Charge/Temperature in °C
Humidity Accuracy:  ±8%
Humidity Resolution:  1 %
Screen Type:  LED
Temperature Accuracy (Indoor and Outdoor):  ±5℃

Length USB Cable:  100 cm
Charching Time:  240 Min.
Max. Battery Runtime:  210 Min.
Power Consumption:  1000 mA
Power Supply:  5V (Micro USB)
Temperature Range:  0°C to 50°C
Temperature Resolution:  0.1°