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

Does the job. Big display. Good Sensitivity.

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

It arrived packaged well and had the appearance of NOT being some cheap thing that would break soon. It was fully charged or appeared to be. The instructions are tiny but the first page has a QR code that I scanned and it pulled up the instructions on my phone. The information was helpful and I was outside calibrating it in just a few minutes. Calibration is done outside, away from pets and people and it takes 200 seconds. It also has a nice little stand with a metal bar on the top that the monitor latches when it is set on the stand and it sets up nicely and is easy to read. The monitor having a magnetic back can also be attached to a metal surface like a refrigerator for instance. In conclusion I run a propane heater at my fireplace in the winter and it may run for 12 hours at at a time. I have a few CO and explosive gas detectors throughout the house to alert me of dangerous conditons so that I don't wake up dead one morning from CO poisoning or get blown up from a propane gas explosion. The one thing I didn't know is how much CO2 was building up in the house from being closed up with a propane heater running so long each day. It gives me peace of mind to have the monitor but I really don't know how good it really is because I don't have anything to compare it to and I just started monitoring CO2 with it but I have to believe it will give me good information until I have reason not to.

Pro Solid hardware versus price Design Great display CO2 measurement, including traffic light bar Rechargeable battery (no permanent 220V connection) Long accu cycle time Easy to programm Contra No alarm set point in instruction leaflet Buzzer does not trigger when alarm is reached (hence 4 stars) Addition to review dated 16-03-‘24 My message to Temtopus.com: Recently I received the Temtop type C1 CO2 monitor. At which CO2 level will the buzzer be triggered? No Info in the Instruction booklet about that. See picture. Answer Temtopus.com If the CO2 level's changing from green to yellow, or changing yellow to red, it can both trigger buzzer alarm. My action after answer of Temtopus.com: Simulated testing, learned that indeed the buzzer is triggered at threshold levels. Two very short soft beeps can be heard. 4 stars unchanged. Johan (from 'The Netherlands)

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!

This CO2 monitor is actually one that I enjoyed until recently. When I first got it, I followed the instructions and calibrated the device, all was well. Then a few weeks later, I noticed something strange, the CO2 number wouldn't adjust. It has two modes, eco and automatic, and whether you set it to either it doesn't adjust the reading. It only does so once you press the button and I suppose it turns it on, but it's supposed to be on 24/7 automatically regardless. So I'm kicking myself for not just getting the aranet4 detector instead, I thought I would save money going for this one because it's cheaper but the damn thing doesnt work properly, from what I can tell the readings are somewhat accurate but I don't have another CO2 monitor to validate that.

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.

Works as described. It gives me peace of mind. When numbers in my studio get above 1000 I open a window. It’s winter so they are closed more often than any other time of year. This product is great.

I was sceptical at first, but wow! the battery last for ages and the item is super accurate. great value for money and super portable. the stand is magnetic so it can be folded up and taken home in a small bag if you don't want the cleaner to run off with it :)

good item

Fonctionne parfaitement. Mode d'emploi sur i ternet en français. Je le conseille .

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。