EG Air Quality Monitor, Formaldehyde Detector, Pollution Meter, Sensor, Tester; Detect & Test Indoor Pollution, TVOC Volatile Organic Compound Gas, PM2.5 2.5 Micron Particulate Matter Dust; eBook

OK so this device is fantabulous!! OK you MUST calibrate it correctly!! Follow the directions for the first callibration ever - I think that might be 20 minutes outside. Don't ever callibrate it inside. So each time, I set it outside in the clean air and let it do it's countdown in the fresh air. Now, I take it where I want to go and set it in the room for about five minutes. It has helped us SO MANY TIMES! We bought furniture from "The Cannery." It came with quite a smell. I am sensitive to some odors, what was the smell? Was it Mahogany or was it something else? This device told me that the odor was NO PROBLEM at all, so the smell was probably fresh mahogany!! Next, we were kitchen cabinet shopping. Didnt want to spend an arm and a leg. Went to to Kitchen Cabinet store in which the prices are AMAZING. They only sell like five colors of cabinets. The cabinets really looked amazing, even saw that the boxes were made of plywood. The cabinets were shipped in, and then the company would put them together - or you could yourself. We were very close to making an order but before hand, I just had to wonder... Why were they priced so well? I sat out in my car with my device callibrating up through my sunroof on the top of my car in the fresh air. It was time to go in the store... Hiding my device, I went into the store... Only moments later heading over to the cabinet section - "BEEP BEEP BEEP!!!" My device was sounding! Quick, I stuck it in the drawer of the cabinets - it was in the RED!! A little longer and I set it in another cabinet (it doesn't keep beeping) TALK ABOUT TVOC'S!! The formaldahyde was also elevated. OKAY SO YEAH. So just the AIR in that warehouse had elevated TVOC's and formaldahyde, I was concerned for the safety of the workers. They were mostly young and most likely naive to what they were breathing. I did a little research and after speaking with someone knowledgeable on the levels, I learned that the levels in the air shouldn't harm the workers, and that if I bought the cabinets, I'd probably need to air them out or run a fan on them - sound like for weeks or months to help bring those levels down. We've used this multiple times, and let a friend use it... It's fascinating, a great tool to help steer you in what you want to buy. DON'T BE ALARMED and freaked out - understand it's not PPM's - it's a different measurement. Be careful not to freak out and become a "Karen" when something reaches a high number, orange or red color and starts beeping. But, know it's helpful for you to help you make healthier buying deciscions.

I just did some try outs today. Works perfectly fine, i got kind of concerned from people’s reviews saying the battery sucks or you can’t put out the alarm or change indication of where the alarm should go off. I literally changed those in 1 minute and it’s really easy to go into the menu. The battery life i don’t have any problem with since i use it in specific areas like at work or at home just out of curiousity for a 15 min and i put it off. There’s people complaining about a noise because of the fan. Mine makes zero noise, i’ve put my ear at the device to hear the fan ( because that’s a part of what it uses for measuring the air quality ) and until then i heard the fan. I think this is a good device, if i put it into a smokey area it obviously turns red, if in clean areas like forest it shows green, there’s people that wrote they started comparing with other devices showing different numbers, imho you will always get different numbers that way. I like this one it’s easy to take not too big. I think the only thing i don’t like is that it’s kinda light feeling and the plastic feels cheap, but overall good deal 👌🏼

I was suffering where I work - it is a really small company and the ventilation is never very great and sometimes just bad, and the air gets stale and carries various stink and polluting materials and the wrong temperature and too humid or too dry - I bought it to give some sort of objective view, and backup to my whining and my resulting bad behavior! ... It seems to have given me some peace of mind, a little bit. Obviously the owner wants to save money by letting in just a minimal amount of fresh air. The HVAC system seems not to have been developed by the greatest of engineers ... So I bought this and it does apparently work fairly well! I wish that it could have a way to NOT show a big bright yellow or green smiley face or frowny face, because that made some people think it was to test your breath, or tell if you were drunk, or whether it thinks you are pretty (I think they thought there is a camera on it) My greatest fear about it is that I will leave it out and then someone will take it and then I will never see it again, but there is no way that anybody could build a thing that would not have this problem. Some kind of bicycle lock for it maybe ??? For a design idea, i thought maybe it would be smart to allow the user to specify a session for data recording - make it so I can tell it i'm going to leave it out for 20 minutes or 8 hours, and please keep a record of the average every 5 minutes or every 30 minutes or whatever - it might be tricky to make it usable - something like a microwave keypad or just choosing from a list of intervals maybe. The way I used it in lieu of this was just to glance at it periodically and take a photo of it with my cell phone camera. Also obviously writing it down in a notebook would be easy. I noticed whenever I turn it on it shows high readings at first if it has not been turned on for a while, because of the plastic case making some kind of measurable gasses. But it can detect the difference between fresh outside air and stale inside air. It helped me also at home because I turned it on in our bedroom and it showed high formaldehyde so now I realize it is good to run our filter or leave the window open a crack. One downside to the sharp edged 1.0 detection level is that it seems to think 0.95 is just really completely fine and I suspect 0.95 is almost as bad as 1.05 but the readout looks completely different emotionally then. I doubt the 1.0 level should really be that significant. I noticed acetone nail polish remover seems to affect the formaldehyde reading. I didn't find that to be a big issue but it could be confusing to try to diagnose what is going on in a nail salon if the user doesn't realize it. I would have preferred a carbon dioxide reading also but apparently from what I read the air would have to be really extremely stale in order to see a reading that would be a medical issue. But I have read if it is about 800 parts per million (double what is in the air) it can start to make us humans sleepy and make more mistakes. But it would have doubled the cost of the detector or more, since it requires a complicated chamber with a special detector electronics in it. Hope this helps!

I liked having this little meter tell me about my internal air quality and then being able to take it outside to determine if the air quality outside was better. Some days with fires, when it didn't smell like fires it was useful to know the 2.5 PPM counts. It also let me figure out if closing up my house and running my filters if I was making a difference - big difference as we could get and keep our 2.5 PPM's down below 20 when the outside was up above 80 or 90. It showed me that my filter choice for my HVAC MERV values when high wasn't really doing anything more to help than lower value MERV. All that was great . . . unit only lasted 6 months though and now I have something which won't take a charge and is useless. I was hoping this would last a few years. Any help from the seller on this. What's the warranty? Update 10/2 - I reached out to Amazon and asked to have to be in touch the vendor. Amazon said they would but haven't seen anything and it been 4 or 5 days. If the vendor wants to resolve this - please reply with your contact email/phone in your comments.

I have a bunch of air quality monitoring devices from a variety of manufacturers and extensive air filtration in my home. I have pretty acute asthma and I know that my environment aggravates it. Because all my devices have different readings for the same air and they monitor different contaminants, I wanted a device that monitored as many things as possible and was accurate. I can't speak to the accuracy of this device because I have no way to calibrate it with an objective, calibrated source. However it does monitor things that my other devices do not, and when they're reporting low or no contaminants, this device does report that there are measurable levels of particularly volatiles and hydrocarbons (everyone else seems to agree about pm1/2.5/10). So I have learned some data I didn't have before I had this device. But there are definitely some issues. The battery is laughably inadequate. It doesn't even last a day unplugged (micro USB, which is a pain). So you have to leave it plugged in, which causes the device to heat up. This causes two additional problems. First, when it gets hot, it has a fan that turns on. Obviously this changes the reading on the device because it works by sampling air across a sensor. The device is obviously less accurate when the fan is running, which is hard to avoid. The fan itself is noisy but not too bad. Between the fan noise and the reduced/nearly useless accuracy when it's hot, I find that it's not actually useful to leave it on all the time and it makes much more sense to use it when you need it, rather than use it for continuous monitoring, which is what I wanted this for. It has zero integration with IoT/smart devices, so you can't poll it or set up ifttt to work with it. And of course you can't store data from it. So while it's a very useful meter, the fact that you can't log data makes it much less useful. The interface is absolutely terrible. If you're just using it for quick measurements and verification of your environment, it's not that big a deal, but even setting the date and time is a chore. And this brings up the next point. There's no remote, no app interface, and the on device interface is awful -- but also it has an alarm which is incessant when it is alerting (and when it gets hot the TVOC meter gets pegged so it's beeping continuously). It's either impossible or very difficult to configure the alerting (which will also alert when it thinks it's too cold or too hot). You can turn off the buzzer entirely but the selection for this ("buzzer closed") is unintuitive and not very useful. Even if you could leave it running continuously without it overheating, there's no way to mount it on the wall, and there's no way to leave the display on continuously. So you can't monitor it with an app, you can't run it continuously, you can't use the display continuously, and the options for alerting seem to be "alert all the time or don't alert at all." Ultimately I don't think I can use this device at all, which is a bummer because it has potential and seems like it could be useful. Questionable design choices however mean that this thing is just sitting unplugged and useless on a shelf. That said I did successfully use this device to learn about irritants in the air I was unaware of. I just need to find a different device to monitor those specific things so I can begin to address what they are and what causes them. Pretty disappointed for something that cost this much.

Upon my initial observation of the box that this device was shipped in, I was kind of amazed at the quality of the packing and the device itself. I've been using this device for the past couple of days and am fairly impressed with the accuracy and sensitivity of the device. An absolute must for anyone with allergies, or if the household is getting sick for no apparent reason. I highly recommend you follow the directions, especially during the initial unpacking of the device. As recommended, you should leave the device outside in open air for at least 30-60 minutes before turning it on to allow all sensors to vent. Some sensors contain heating elements within it thats necessary for it to function. For best results, let everything air out before applying power. Once I got the device working, I was utilizing it to measure various areas. I took it to work to measure the air quality in one of the datacenter labs and had HCHO of 0.000, TVOC of 0.001, and PM2.5 of 000. The device pretty much provides real time stats because as I was working in the lab, every time I walked by the device, the readings changed very slightly (i.e. TVOC 0.001 increased to 0.005, PM2.5 went from 000 to 002, etc). Numbers all went back to zero after a few moments. This device is so sensitive, as I walked around my home, the measurements showed up in real time. When I walked into the hallway, readings dropped fairly low. Reason is we have a HEPA air filter in the hallway situated near the cat litter. This device is so sensitive, it can tell a difference when I drive down I-280 and I-101 with my windows down. Where I live, I-280 is a freeway completely surrounded by trees, whereas I-101 is mostly industrial. Readings are much lower when driving along I-280. See? Trees are very beneficial to help keeping our air clean! This device is so sensitive, it kinda makes going #2 fun. Because fecal matter releases VOCs due to the sulfurs, and many other chemicals used in your body for digestion, it will register a higher TVOC value on the device. Stinker the poop, higher the TVOC value! You or someone smokes? While smoking, run this device and see how detrimental smoking does to your air quality. Second hand smoke is no joke! Live in California like me? Take this device (rechargeable battery and portable, so convenient!) with you when you go outside to check your air quality due to the many wildfires going on in the state. Although this device will tell you your Air Quality Index (or AQI), it won't be able to do anything more than tell you. Very helpful to allow you to take extra measures to protect yourself (especially if you have asthma, such as myself). Because this device measures the separate AQI values in real time, use this device to check the effectiveness of your air purifier! Bought a new car? Take a reading with this device in your new car's interior. That new car smell, believe it or not, is the emissions of formaldehyde caused by glues and resins curing. Bought new furniture? Use this device to check the HCHO levels that new furniture has the potential of giving off. Most furniture is made of MDF, or particle board. Particle boards are bits of wood bonded by chemicals and glues that emit formaldehyde. What I thought could have made this product cooler: * Ability to save histograms when measurements is started. You have to be on the graphs page and leave it there to get historical graphs. If you leave the page and go back to it, you won't be able to view past measurements. * Ability for the device to save calibration data across power cycles. When you calibrate the device and zero it out, next time you power cycle the device the readings may be a bit different. * Ability to export results over time * Ability to change the user interface color schema This product is perfect for taking spot measurements to get a good idea of present environmental conditions. You won't be able to see past readings. I highly recommend getting this product!

I purchased this product to test the air quality of the manufacturing shop I work in. OSHA was on site recently and during my conversation with the OSHA inspector it came to my attention that my company had not disclosed to OSHA that we weld Chrome Rod. I also learned during this discussion with OSHA that welding Chrome Rod is toxic and a known carcinogen. We all knew that the air was incredibly unhealthy as it regularly looks like a rock concert with fog machines in the shop, but finding out that it wasn't just regular weld smoke but potentially toxic Hexavalent Chromium that we were breathing in all day motivated me to purchase this device to monitor the air quality myself. I am very happy with how this performs, directions are clear and concise which made it easy to use as I have no experience operating this equipment before. When I start it up outside it shows the Particulate Matter of our outdoor air as a reference point, usually around PM 2.5 12 or so, a safe "Good" level. Then after it has adjusted to the outdoor air and I walk through our shop the sensitivity of the device shows and it instantly starts climbing from "Good" to quickly passing "Moderate" and rising to "Unhealthy for Sensitive Groups" then to "Unhealthy" charging on to "Very Unhealthy" then finally reaching the "Hazardous" designation before it finally maxes out the meter at a PM 2.5 of 999. I find the design very useful as it references different levels as mentioned this way, although I hope you don't find yourself in the "Hazardous" level like we usually are in our shop. I chose the beginning of this video to demonstrate what it looks like going from fresh air outdoor to our poor air inside, I had to trim the video due to its length but also included a picture of the meter while it is maxed out at PM 2.5 999.

upon first glance it seems like a decent device. When you get it out and get it going and start to see the numbers you think... hey its working cool. I soon realized I was getting false readings and things just didnt seem consistent so I ordered another brand of detector at a higher price and when it got here i compared them side by side. I followed all guidelines and restrictions but it was obvious the formaldehyde detector was going off for everything. Dont get me wrong it was picking up some but also giving the wrong numbers that were way to inconsistent. What made me give this review is the fact that when I turned it on this morning at work I heard a grinding noise coming from inside. The fan has begun to malfunction. It is an important component of the system since it allows constant outside air to be pulled though rather than sit stagnant. I really wanted to trust it and I dont know if i can even trust the other one but the fact that I was getting crazy numbers back from the same unventalated and unoccupied room within minutes just was the final straw so I'm going to be sending this back right after I finished the review. I usually dont write reviews but I felt compelled since I know how important a device working as designed is and how disappointing it is when they dont. You dont often find true honest reviews so I felt I needed to do one for this. I'm not trashing the seller and I do have a track record of being the lucky one to always pick the broken item off the shelf but in my case it's just not working and I think its only fair to add this review.