Multifunctional Air Quality Detector Indoor/Outdoor HCHO & TVOC Tester CO2 Meter Monitor CO₂ Tester with Rechargeable Battery ( Item#: E3849H )

I purchased this unit to help determine the problem between the TVOC and the new house I purchased. We told the builders to use VOC-free wall paints and very low or VOC-free cabinets and decorative paints, but they chose high-VOC enamels for some cabinets that were still exhausted after 4 months of painting (madness). If you remember that the device must be properly calibrated before taking measurements, the device is working well (please read the manual). This requires 30 minutes of fresh air and uses the "calibration" menu item. I don't have expensive monitoring equipment to compare with, but I have tested several homes and it provides a good comparison. Advantages: When you want to compare different locations, measuring relative air quality seems to be a reasonable job. Ease of use Disadvantages: The battery usage rate is high, and it needs to be recharged after 2 uses. It takes at least 5 to 10 minutes to get a stable volatile organic compound reading. Before a stable reading is obtained, the screen will turn off, causing it to wait 3 minutes to get another reading.

I bought this book because the air quality in my city is not good, and this is because there have been a lot of fires at any given time in California recently. To my surprise, my own house was contaminated, and we kept the house tightly closed because of the fire. Since there are various products in anyone’s home (I just learned about this), it’s best to provide fresh air through open windows every day, or use a high-quality air purifier to clean closed rooms. At the same time avoid outdoor pollutants. This instrument is really a life-saving straw for me. The best part is that no matter where you go, you can quickly find out how good the air quality is. One improvement is to extend the battery time, but it has a USB charging plug that can run when plugged in. I am not easy to please, this monitor is really helpful.

I have to admit that when I consider buying this product, my prospects are not clear. But surprisingly, the product is indeed effective. Soon: I am allergic to the air in the apartment. By using this product, I was able to determine that I was responsive to the volatile organic compounds produced by the two new chairs we recently purchased. The chair moved back, his eyes awake. Without this product, I have no idea what the source of the problem is.

When I first observed the shipping box of this device, I was surprised by the quality of the packaging and the device itself. I have been using this device for the past few days and I am very impressed with its accuracy and sensitivity. This is absolutely necessary for anyone with allergies, or if family members get sick for no reason. I strongly recommend that you follow the instructions, especially during the initial unpacking of the device. According to recommendations, before opening the device, the device should be placed outdoors for at least 30-60 minutes to ventilate all sensors. Some sensors are equipped with heating elements, which are necessary for the sensor to work. For best results, let all the air out before turning on the power. Once the equipment started working, I used it to measure various areas. Bought a new car? Use this device to take readings inside a new car. Believe it or not, the smell of a new car is the formaldehyde released when the glue and resin cure. Bought new furniture? Use this device to check the level of HCHO that may be emitted by new furniture. Most furniture is made of medium density fiberboard or particleboard. Particleboard is a small piece of wood that is bonded by a chemical substance that releases formaldehyde and glue. My thoughts might make this product cooler. I strongly recommend you to buy this product!

If you don't know how to use this project or understand how it works, please learn. This is a good tool. For fun, I measured TVOC (Toxic Volatile Organic Compound) on a pot of quite hot kimchi. The regular reading is green, which means "fresh". You can easily understand the acceptable ppm (parts per million) reading. HCHO means formaldehyde. I bought this to have a "bacteria and mold sniffer". I want to know if there is mold anywhere around me. So I traveled throughout the house, especially the kitchen and bathroom, and I did see some numbers rising under the kitchen sink, the pipes connected together, showing mold or other bacteria. The content of small particles of mold and bacteria is ppm. If there are mold spores or bacteria that are regenerating and decomposing (life cycle), then when this process occurs, it will release gases and other substances. This is how it works. When you put it near a moldy kitchen duct, such as a new plastic (folding chair) chair, if too much formaldehyde is used in production, this small tool can pick it up and let you know the problem Where is it? Or, if you want to know how strong kimchi is, it will tell you. But you must slowly and steadily observe the rise of the number or remain the same or similar. Obviously, as the content of hexachlorocyclohexane increases, the gas released by kimchi is similar to that of hexachlorocyclohexane.