2.HCHO formaldehyde test concentration range: 0 ~ 1.999mg / m3
3.TVOC test concentration range: 0 ~ 9.999mg / m3
5.Large screen color LCD display
6.Temperature and Humidity test
7.Low battery alarm
8.Date and Time display
9.Built-in high-capacity lithium battery
10.Screen: If the device has not been operated for 5 minutes,it will
enter the black screen protection automatically , if there is no operation
within two hours, it will close automatically.
-What are included:
DM106A Main Unit*1,
Formaldehyde calibration method:
Put the device into a place of good air quality , let it aside for 5-10 minutes,
Double click the "OK" button when the device stay at interface 1
The Initial values of Formaldehyde and TVOC are 1.999 and 9.999 ,the device needs manual calibration before working.
1.Any sensor will be subjected by certain external substance when working,so please keep it away from Alcohol, Perfume , Chemical volatile gases,smoke and so on when you check.
2.Indoor air is circulating ,the gases go into sensor vent are different at different time,the amount of formaldehyde in the air may be also different.So It is normal that the detection value is floating up and down.
3.Avoid the fan, heater and other strong directly winds blown vent hole interference test results of the accuracy when use the device.
The product should be placed in a relatively stable area of air flow, so that the detection can be accurate.
4.Before you use the device to test the HCHO and TVOC in the bedroom, living room, cloakroom and other space,it is better to seal the windows, doors for 24 hours and then tested. in addition,the average content of air is derived from the average value of multiple points test data in the room.