After I purchased my new house (USA, Georgia) I put in the detectors. My wife is from China where people are rightfully paranoid about formaldehyde - due to low quality building material. It's basically the same in the USA, except people are a lot less knowledgeable and informed about it. My cabinets, drywall, paint all had high level of formaldehyde. Had to always had the windows open...otherwise it would rise above OSHA approved levels.
In the USA, there's no regulated levels for residence..but there is for office. Funny, isn't it.
Sadly they do not break it down by substance type (which the website almost suggests it does), but i find it very interesting to monitor and that the measurements are highly correlated with painting or opening a window.
I have Foobot (https://foobot.io/) and looks like it cost twiec as much as eve but probably does the same thing. Though, it doesn't say if eve uses wifi..I just see it say bluetooth. I like how Eve is battery powered, you can bring it wherver you want - whereas Foobot is plugged in.
I have UNI-T UT-338C for on the fly readings. I like how the UNI-T can be portable, or plugged in and has a display. I get similar readings between the UNI-T and Footbot so I can somewhat trust it...
Volatile organic compounds (VOCs) are organic chemicals that have a high vapor pressure at ordinary room temperature.
EDIT: I ended up ordering a Foobot after doing some homework
I'm curious what options are out there that will connect via something like RS232 or USB and let you tie into a centralized logging system (which would be incredibly easy to build). "Windows app with one-click data export" would be nice but isn't quite the same as a realtime feed.
The main question would be whether polite pokings would produce protocol documentation, if this isn't already shoved in a forgotten corner on the website (or something).
For context, our house is 3 levels with a furnace in the basement (cold climate; Canada) I ended up with 3 different brand of CO detectors, 2 different brands of smoke detectors and 1 radon detector.
By far the Radon detector is the most expensive at around $250 CAD, and least critical for the short term (but for the long term concerns, anyone with a below grade section of their home should have one!).
A decent Co + smoke detector (You can often get them in one unit) should cost you no more than $30-40 CAD. Testing a CO detector isn't super easy (not like smoke detectors - just make some well done toast), but I'm trusting that if i have several different kinds well distributed throughout the house at least one of them should save us.
I focused on keeping detectors both near and & inside bedrooms, as well as having a minimum of 1 smoke + CO detector on the other floors in open spaces.
Unrelated to these gasses, I also purchased VOC sensors. These are SUPER interesting. It's amazing how the VOC level rises after a few days, and all it takes is opening a window for a few hours to bring it back to lower levels. We were renovating recently and found that after virtually every contractor the house needed hours of windows open to bring the VOC level back down to something that the sensor considered "good quality" (lower than 450 ppm).
Hope that random rant was interesting to someone :)