AR820 Digital Formaldehyde Detector Sensitive Air Quality Monitor Tester Indoor Thermometer Hygrometer Gas Detector /Analyzer

Useful formaldehyde detector with quick response and high precision. It can effectively protect you and your family from the harm of formaldehyde.
Features:
This formaldehyde detector is an instrument for detecting indoor concentration of formaldehyde.
It also can measure the current temperature and humidity at real time.
The formaldehyde concentration can be displayed in 2 units: PPM or mg/m^3.
Temperature can be displayed in Celsius(°C) or Fahrenheit(°F).
Press the UNIT button to change formaldehyde unit, long press the UNIT button to change temperature unit.
With a high precision sensor, the detector has the advantages of high accuracy, stable, real-time continuous monitoring.
The detector can give an alarm every 5s for fair level and every 1s for bad level to remind you of opening the window for a change of air.
With bright backlight, it is convenient to use at night.
With a removable base, the meter can be placed on the table.
Suitable for houses, offices.
Specifications:
Display: LCD Display
Color: White
Backlight: Green / Red
Formaldehyde Measuring Range: 0-5PPM
Formaldehyde Resolution: 0.01PPM
Formaldehyde Accuracy: ±5%
Formaldehyde Level: <0.1mg/m^3 Good; 0.1-0.3mg/m^3 Fair; >0.3mg/m^3 Bad
Temperature Measuring Range: 0-40°C / 32-104°F
Temperature Resolution: 0.1°C / 0.1°F
Temperature Accuracy: ±2°C
Humidity Measuring Range: 10-95%RH
Humidity Resolution: 0.1%RH
Humidity Accuracy: ±5%RH
Power Supply: 3 * 1.5V AA Batteries(not included)
Item Size: 12.5 * 6.5 * 2.5cm / 4.9 * 2.6 * 1in
Item Weight: 113g / 4oz
Package Size: 22.5 * 18 * 4.5cm / 8.9 * 7.1 * 1.8in
Package Weight: 359g / 12.7oz
Package List:
1 * Formaldehyde Tester
1 * Tester Base
1 * USB Cable
1 * User Manual