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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: Dienmern
  • Model Number: DM-105A
  • Color: Black,white
  • Detecting Gas: TVOC/HCHO/TEMP/HUM/AQI
  • AQI range: 0-500
  • HCHO range: 0.001-1.999Mg/M3
  • TVOC range: 0.001-9.999Mg/M3
  • HCHO Sensor: Electrochemistry
  • Humidity range: 15-90%RH
  • Power supply: Li-battery 1000mAh
  • product size: 149*69*22MM
  • Product weight: 300g

Packaging & Delivery

Packaging Details box
included :Main Unit+ manual+charging cable
Packing : 40 pcs /ctn Carton size: 32*35*15Cm
N.W:14.1KG G.W:15KG
Delivery Time 10-30 days

Gas analyzer Formaldehyde(HCHO) Monitor Indoor Air Quality Logger Detector Accurate Testing Data with TVOC/HCHO/TEMP/HUM/AQI


Bullet Point

Handheld design,very smart,black color,Variety of interface style switching.

Accurate detection for Formaldehyde HCHO ,TVOC including benzene,AQI,TEMP,HUM

It can be used in office, indoor and fitment pollution detection,24 hours real time monitoring.

Detection range: HCHO(0.001-1.999Mg/M³),TVOC(0.001-9.999Mg/M³)

Built in Li-battery 1000mAh,including Usb charging cable,user manual.1 year warranty.



Product description


The formaldehyde detector meter is adopted  Electrochemistry Sensor Technology ,

Strong anti-interference, with usual calibration,detect more accurate.

it analyze air quality and detect HCHO,TVOC ,AQI,TEMP ,HUM  display.                                                        

The formaldehyde detector meter is suitable for new furniture & decoration, living room, for the new car etc.

24 hours real time monitoring

TFT Big electronic screen, clear display, convenient for your reading.                                 


HCHO formaldehyde test concentration : 0.001-1.999Mg/M³

TVOC test concentration : 0.001-9.999Mg/M³

Temperature and Humidity ,AQI display.

Sound alarm

Low battery alarm

Testing result for last 7 times record

Date and Time display

Built in Li-battery

What are included :

Main Unit   1pc

User manual  1pc

USB Charging cable 1 pc



Related products

QA :


1 Q: Why do I need to calibrate?

A: Our products work in the form of outdoor formaldehyde-free air sampling as a benchmark, and then get indoor air formaldehyde content as a comparison, so the new machine products for a long time not used, the detection of environmental temperature changes need to change First calibrated and then tested, the value of this calibration for the subsequent detection of the accuracy of a great relevance. Calibration environment must avoid spices, perfumes, paint, cigarettes, air fresheners, alcohol and other chemical pollutants, so as not to damage the sensor.



2 Q: the test value has been 0, spray perfume will rise?

A: Please re-calibrate outdoors. Detection of spices, perfume, paint, cigarettes, air fresheners, alcohol and other chemical pollutants, so as not to damage the sensor.


3 Q: How much range of detection of formaldehyde concentration detector,how many square meters?

1) The principle is less than 50m3 ,the room should be set 1 to 3 points;50 ~ 100m3 Set 3 to 5 points;More than100m3 at least 5 points. On a diagonal or plum blossom evenly distributed.
2) Sampling points should avoid the ventilation, from the wall distance greater than 0.5m.
3) The height of the sampling point: in principle, consistent with the human breathing.Relative height of 0.5m ~ 1.5m between.


4 Q: Why is the product sounding when working?

A: The device need to collect a lot of mobile air, in order to ensure accurate detection of the fan needs strong operation, so a little sound is normal.


5 Q: What is the standard for formaldehyde (HCHO)?

A: ≤ 0.10mg / m3 ("indoor air quality standards" GB / T18883-2002)

6 Q: What is the standard for total volatile organic compounds (TVOC)?

A: ≤ 0.6mg / m3 (GB / T 18883-2002 and GB 50325-2001 Class II civil construction)





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