TemtopAir Quality Meter: Precision Indoor/Outdoor CO2, PM2.5, PM10, Detection with Audio Alarm, Temperature & Humidity Insights for Enhanced Home Comfort, M2000C

The Temtop Air Quality Monitor is a quality device. My wife has Eosinophilic asthma, which is rather rare, but besides coughing her sense of smell is off the charts. Everything with any type of odor is offensive to her. She uses the Monitor frequently and finds it very accurate. Even our 2017 Toyota is still off gassing from the interior products, the monitor showed that, and she now knows why she is coughing in the car. We leave the window open at night when the car is parked in the garage. The city we live in during winter has inversions and the monitor correctly shows the air quality accurately when the air changes because of the inversion.Great device, priced well for the quality and reliability of the device. Easy to figure out and use. It only comes with the USB cable for charging, which they say you can plug into your computer. If you use a wall charger for the USB cable, make sure that it is the correct charger & amp. rating for the device. Be nice if the manual went into this further, rather than just say plug into your computer USB port. I did and it caused my computer to go into "Safe Mode". I found a charger from an old Samsung tablet that had the correct ratings that we use now.Overall, very handy and accurate device to have on hand!

I'm a professional HVAC technician often dealing in home comfort and air quality systems, and I also have an instructional social media presence that often leads to collaborations and sponsorships with brands in the industry. Recently, I installed a unique mini split system in my home that has an integrated fresh air make up/ERV on the header as part of a collaboration project, and I needed a meter to take AQI readings as a follow up for homeowners/DIYers and newer technicians that I make content for.Initially I went cheap, buying a 6-1 meter for maybe $40 just to take some personal home measurements as a test, and found it to be horribly inaccurate and totally useless. I mean, so comically wrong I can't fathom how anyone would trust their own health to such a meter. Large brands, consumers and other professional technicians rely on me to provide data and insights they can trust and make decisions on (like tool purchases), so I knew I had to lay down a little money to get something decent if I was going to use any meter for those purposes.This M2000 didn't disappoint. Even right out of the box when these meters are not accurate and need 8+ hours of constant run time to acclimate, it was already providing values I typically expect to see as a professional. The following day after full acclimation and calibration (an ability you want in a meter) the meter was giving much more precise values that I felt confident and very comfortable in trusting.While I wouldn't say this meter is top of the line for extremely high-precision, professional everyday use (which requires precision tools that can cost over $1000+), this meter is an excellent option for affordability vs. accuracy for those looking to get started in air quality measurements without a steep learning curve or very deep pockets.

Good for diagnosing dust levels coming from outdoor sources, and from in house activities like sanding or cooking or running a poorly filtered vacuum cleaner or shop vac. It also easily gives a good asses ent of the function of filter fans or even a face mask with a little cleverness (I am a retired scientist with some background in dust measurements). The formaldehyde sensor is also very sensitive to other oxygen containing molecules, especially alcohols. It does an excellent job of discovering someone drinking wine in the house (or as a too sensitive Breathalyzer). Fun. And is thus also a good way to measure how long it takes for the air in your house takes to be replaced with outside air. The co2 sensor is fun. It nicely detects breathing people. I suspect it might indicate that a small group of people was "unhealthy" based upon the higher CO2 levels. A plus feature for shy people.Serving useful purposes to me and provides fun demonstrations on natural phenomena. The interference of alcohols with formaldehyde detection makes most random indications of formaldehyde will actually be alcohols. But it should be as indicated sensitive to formaldehyde. Its literature should discuss this.

The media could not be loaded. Update: 10/11/2018So after Temtop contacted me about the issue they sent me a working air quality monitor. The unit works perfectly. I am extremely happy that the issue was resolved and the I am now able to test the CO2 in my house. Great customer service and quick to respond. I have uploaded the new video for reference on CO2 portion of the monitor.Original Post: 8/28/2018This is a great device, although; it does have some quality control issues. I have had the device for several months. I have tested the PM2.5/PM10 accuracy readings and the HCHO which are spot on. The issue I had was that the C02 reading never worked. I let it calibrate for 30 minutes outside, 3 hours outside, 30 minutes inside, and 3 hours inside. It never worked. This is why I deducted 2 stars since the C02 levels is quite important in determining a rooms air quality. I really like the design of the unit. The inner components are plastic while the outer are rubber for gripping. The unit has a usb charging port. The software has a easy to use navigation menu that is responsive. The graphs give live reading and indicate the air quality levels. Overall, this is a great air quality monitor with some minor quality control issues.Pro'sQualityDesignSoftware (user friendly navigation menu)AccaracyCon'sNone