Temtop Air Quality Monitor PM2.5 PM10 Particle Counter, Formaldehyde, Temperature, Humidity, TVOC AQI Tester for Indoor/Outdoor Air Pollution Detection w/Data Export

good

Professional quality. This is super easy to use and useful for making sure you are breathing healthy air. Comes ready to go and with a usb charging cable. When it's charged you just press and hold the center button until the startup screen appears. Place the device on a stable surface or hold steady. Select AQI (air quality index) to see the standard AQI that is used in weather reports and smog alerts. Press PM 2.5 to see 2.5 and 10 micron particles per cubic meter and total particles per liter. Press HCHO to see formaldehyde (chemical from particle wood, glues, etc). I used this in my bedroom to make sure my air purifier was adequate and to minimize air leaks from outside. In my photos you can see the outside air was bad due to neighbor with wood stove. After getting a better air purifier and sealing air leaks I was able have super clean air that improves my sleep! NOTE: Follow the instructions so you get accurate readings. Don't blow into the vents and don't measure with air blowing into the unit. Make measurements in calm air with the device steady in your hand or on a clean surface. The air quality measurement stabilizes pretty quick, but for most accurate reading you should wait 2-3 minutes. Temperature and humidity are slower (the sensors are in the case) but will likely be accurate and stable in 5 minutes. Don't swing the device around or let air blow hard into it, otherwise you might get inaccurate results. It has a tiny internal mechanism that draws air into the particle counter module at the proper rate. The device will run approximately 8 hours on a charge. It does not store data, but some other models by this company do. The display is bright, clear, and easy to read. I am very pleased with the quality and functionality of this device! Don't waste money on the cheap ones. This is professional grade. NOTE: This is a sensitive device for measuring particles that are too small to see. If you use it in dusty or misty (paint, hair spray, fog, etc) environments you could foul the internal laser device that counts microscopic particles. For example if you used this in a cloud of talcum powder you could foul the laser optics. Some fluctuation of readings is normal due to particles shed by you, your hair, clothing, dust on surfaces, many sources. These particles can waft into this device with the slightest air movement, including just walking by this device. This affect is more pronounced in clean air because a wave of particles from clothing or other sources will be more obvious. NOTE: If you use this to measure visible particles, such as pollen, you can damage the sensor and will get inaccurate readings. Smoke may be ok for a short period of time (a few minutes) but this is best used in areas where visible particles are not present. Intended for 10 micrometers or smaller particles.

Livré dans une belle boîte en carton, bien emballé, parfait état. L'instrument m'est parvenu déjà calibré, mais j'ai effectué 1h de mesure en extérieur au cas où. En intérieur, l'appareil semble fonctionner, les mesures en PM2.5 et 10 semblent cohérentes. Un exemple, dans une pièce propre et bien ventilée: PM2.5 = 6.1 (ug/m cube) PM10 =10.5 (ug/m cube) Nombre de particules: 1063 Et si je fume une cigarette dans la pièce les valeurs dépassent les 300. PM2.5 = 307.3 (ug/m cube) PM10 = 553.8 (ug/m cube) Nombre de particules: 46 176 Cela me semble d'autant plus cohérent qu'un autre appareil: le QingPing air Monitor affichait 315 pour les PM2.5 dans la pièce où j'avais fumé. Par contre! J'avais acheté cet appareil dans l'espoir d'obtenir une mesure élevée des particules dans l'air à cause d'une odeur en particulier qui me pourrie la vie au travail, de temps en temps, c'est irrégulier. L'appareil ne semble pas détecter cette odeur, y compris sur les mesures en COV. Reste un très bon objet. Dommage il ne mesure pas le CO2 (comme le QingPing), il faut prendre un modèle supérieur. ATTENTION cependant: l'écran se micro-raye facilement.

This is a great gadget that reminds you when to ventilate, especially if you recently installed Ikea furniture, PVC or laminate flooring, or a new sofa that might release formaldehydes. It also detects dust particles if your AC isn't using a filter. On the plus side, it's a good, reliable measuring tool. Easy to use, charge USBC runs long enough or just add powerbank or direct to charger if you need 24\7 control. Little pricey hope it will last long. There is internal "ventilator" moving air for measurements but you can bealy hear it. Compact hand light weight gadget.

Does what it says. Use it for my bedroom after installing new wood floor. Easy to operate

Buen producto, fácil de manejar con pantalla grande, fácil también de calibrar.la batería parece que dura con un uso de 5min diarios, más o menos un mes.