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Description
Formaldehyde TVOC Detector PM2.5 Dust Tester, DM5021. Material: ABS 2. Display mode: 2. 8 inch LCD screen display, 320x240 pixels 3. Atmospheric pressure: 86Kpa 106Kpa 4. Detection method of PM: laser scattering 5. Sampling time: 1. 5 seconds 6. Detection temperature: 10 to 50 degrees celsius 7. Relative humidity: 20 percent to 85 percent 8. Storage temperature: 10 degrees celsius to 60 degrees celsius 9. Concentration unit of HCHO and TVOC: mg m3 10. Power supply: 1500mAh lithium battery 11. Power
1. Material: ABS
2. Display mode: 2.8-inch LCD screen display, 320x240 pixels
3. Atmospheric pressure: 86Kpa - 106Kpa
4. Detection method of PM: laser scattering
5. Sampling time: 1.5 seconds
6. Detection temperature: -10 to 50 degrees celsius
7. Relative humidity: 20 percent to 85 percent
8. Storage temperature: -10 degrees celsius to 60 degrees celsius
9. Concentration unit of HCHO and TVOC: mg/m3
10. Power supply: 1500mAh lithium battery
11. Power supply: 5V DC power charging via USB port
12. User adjustable formaldehyde (HCHO) alarm threshold to alert user to elevated
13. Onboard fan draws ambient air for more accurate real-time results
14. With low battery warning
15. Combined with multiple air sensors and a built-in fan, it can monitor real-time detectable formaldehyde (HCHO), total volatile organic compounds (TVOC), particulate matter < 2.5 microns in size (PM2.5/1.0/10), temperature and humidity, with clock and recording function
16. Dimensions: 155x87x35mm
17. Weight: about 280 grams
Packing list:
- Detector x 1
- USB cable x 1
- Manual x 1
Specification:
| Package Weight |
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.8 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
Sensitive skin
Such a good product. I use after micro needling when skin is sensitive. Also a great product to use as a barrier serum when starting tretinoin cream.
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Reviewed in the United States on April 24, 2026
★★★★★ 5
Saved my skin during an eczema flare up
This saved my skin!
I had an eczema flare on my face, and my usual products weren’t working. A friend recommended the Avene brand and within 3 days of using this rescue barrier serum, my flare was almost completely gone! This saved my face!
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Reviewed in the United States on April 11, 2026
★★★★★ 1
PLEASE REVIEW — FORMULA CHANGED!!!
I wish I would’ve posted a review PRIOR to the formula changing but just know that I LOVED this serum. I’ve struggled with hormonal acne (PCOS) and eczema for as long as I can remember. Finally, last summer my dermatologist put me on (3) different RX including Spironolactone and Accutane. I was so tired so I stopped everything except for CeraVe cleanser, retinol (Tretinoin) and CeraVe healing ointment. My made up skin routine was working until I used too much Tretinoin and burned my face. I had read great reviews about this product so I thought, I might as well try it — and IT WORKED! I’ve been using this product for almost a year and I loved it. However, 3 weeks ago when I ordered it, I noticed the bottle had a green tint. I could tell after one use that the feel of the serum was different, more watery, not as thick as it used to be. The smell was also different. Still, I kept using it for nearly 2 weeks and I experienced 2 breakouts! Sure enough, I stopped the product and within a few days, my skin was back to normal. I am very upset because as someone who has extremely sensitive skin, this worked but unfortunately, the new formula isn’t for me.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
I love this
Color: White, Size: Small
This is gorgeous. It adds so much to my bookshelves. Beautiful and high quality. Gorgeous design
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Reviewed in the United States on September 12, 2025
★★★★★ 5
Bookshelf bust
Color: White, Size: Small
This was smaller than I expected, I knew it was 6” but still just thought it would be a little large. But! It looks great on my bookshelf! Well packaged and looks just like the pictures
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Reviewed in the United States on February 14, 2026