CO2Mini Indoor Air Quality Monitor

It has helped me keep overnight air fresher in bedroom. Early on I disabled the piezo speaker but had to do it with a screw forced into the speaker. I recommend mfr make silencing more convenient. Silence helps sleep.

I've carried this to all sorts of places where you can unobtrusively measure the CO2. I love it and use it all the time. The only drawbacks: beeps on power-up (everybody knows); insists on beeping at high CO2, though you can set it for 2900 ppm, my gym is often over that; wish I could disable temp or have smaller temp simultaneous with bigger CO2, as I often want CO2 but get confused by temp or have to wait 10 seconds for CO2 to appear. I've used external battery USB power to avoid need to plug in - rechargeable would be nice addition. Going to 5Kppm would be nice too.

good service .OVERALL HAPPY

I bought this product for personal use to track the CO2 levels in my bedroom/home office. It has worked wonderfully and the provided software has meant that I can keep track of things like average CO2 levels over a given period without having to keep checking the device.

If you are thinking about buying this, I would strongly suggest that you do! It's a few quid (or dollars) for basically free brain power. When I first got it I realised ambient CO2 levels in the room were consistently over 1000ppm. Now that I have it I have been able to keep the CO2 levels below 800ppm pretty much all the time and I feel much better for it!

Recibed in good conditions, described.