Temtop CO2 Monitor Indoor air Quality Monitor Portable CO2 Meter, CO2, Temperature, Humidity Home, Office or School

Great device and easy to use . I found an area right by my bed that was high and was able to correct it .

It was perfect for my home office and works very well.

EDIT 11/13/24: The manufacturer reached out to me and wanted to make things right. They offered to refund or send me a new one free of charge. I opted for a new one to see if it will fare any better than the original. I’m hoping it holds up better since I do like the simple display a lot. I adjusted my review to 4 stars for the responsive customer service, but I’m still keeping a star docked for the hiccups with the initial unit. I’ve only been using my monitor for 4 months, and the screen has lost its ability to fully display the numbers. When it was working, the CO2, temperature, and humidity data seemed to be pretty accurate and the battery life is long, but it’s unacceptable for a screen to be dying like this after such a short amount of time. It looks similar to a calculator screen, and those things last forever so I’m not sure why these fail so quickly.

Has been working as it should, long battery life

Most monitors have a backlight that can't be turned off. If you prefer to sleep in a darkened room, this is a good choice, with its basic unlighted LCD display. Also, without the backlight, the specs say its internal battery will keep it running for a month or two rather than the day or two which is typical for lighted units; this only matters if you need it to run for an extended period without being plugged in. It seems reasonably accurate; probably not a precision unit, but good enough to get a sense of your living environment.

Bought this because I wanted test the CO2 levels in my home. I have found it very interesting. I have tested it all over our house but mostly leave it in our primary bedroom. After my husband and I have slept in the room all night, the CO2 levels are usually in the 1100-1200ppm range by morning. If I open the patio doors in our bedroom, the levels drop by half within minutes! I had already been in the habit of opening our patio doors in our bedroom for fresh air, usually while I make our bed, on a regular basis. My husband sometimes gives me a hard time about opening doors or windows (we don't have any screens) because he doesn't want flies to come in. Now, I have scientific proof that what I have been doing is beneficial for our health lol. Our bodies need fresh air! Can't imagine what this would read if I leave the doors and windows closed all the time like he likes! The readability is clear, size is easy to read, instructions included (but not needed for me - it's self-explanatory), a fair value for your money. Screen is bright enough for not being backlit. That's a preference as some people don't want a backlit screen while trying to sleep. All in all, I recommend!

Great product, easy to use, battery has lasted a long time. Very handy, I have taken it to work and used in different rooms of my home.

I've had good success with other Temtop products, but this one fell short. The temperature and humidity functions work fine but the CO2 function is very inaccurate. After calibration outside (400), the calibration point drifts higher to the upper 400s after a few hours. This results in very high readings indoors. I have two Temtop M2000 2nd generation monitors to compare readings with. I should have returned this one.

Works exactly as it should and a great piece of mind to see the actual CO2 readings

good item

Good item, helps a lot

Tiene buena precisión y nos ha ayudado a saber cuando tenemos que abrir las ventanas.

半額でChina製の知らないメーカーを買おうとしたけど（Temptopというメーカも知らなかったが）、１年以内に壊れたというレビューを複数見て、この商品は２倍値段がするが、外国のレビューが高かったので購入した（日本人レビューはなし）。小型で表示も見やすく、CO2、温度、湿度とも正確に素早く表示するので安物買わなくてよかったと思った。アプリをダウンロードしてスマホでいろいろとデータ見たり、時刻をこのモニターに表示できたりできるようだけど、なぜかスマホとbluetoothで繋がらない。CO２濃度だけ見れればいいので、面倒だから繋げないで使用している。