uHoo9-in-1 Smart Air Quality Monitor Indoor, Smart Temperature Sensor, Smart Humidity Sensor, CO2 Monitor, and Mold Detector for Home with Free Mobile App

I've had my unit for almost a year now, there have been a lot of bugs, but the uHoo team seems to be continually iterating and building upon the app. It's definitely a much stronger, more reliable tool than when I bought it. Probably for the first nine months my NO2 and O3 readings were always off the charts, and I basically learned to ignore them as I still got mostly reliable info from CO2, PM3, and TVOC which were the most critical metrics for me. Eventually, I contacted the team about this bug and it got fixed within a few days. It seemed like a bug that was impacting only my unit. There have been a few other hiccups, but they were random and I've learned to deal with them, but as of the last couple of months I haven't seen many, if any, bugs, and the app has a much better UX.I'm looking forward to using the IFTTT features soon, it's the feature with the most potential. Right now, IFTTT doesn't seem to be very robust and that could be due to being new to it. I imagine the uHoo team will continue iterating on the ability of the end-user to access the data. Previously I wasn't planning on buying anymore of these, but since the app and reliability have improved, I will be buying another couple of units once I find enough free time to comfortably navigate IFTTT and data exporting to justify the cost.In about a year or two, I plan on constructing a house and it would be great to see an expansion of this product into something that can be incorporated into said construction and not something merely designed for a table or counter top. Maybe something that looks like a smoke alarm and mounts to the ceiling powered by a lithium battery with the ability to connect to WiFi / LiFi. Also on the wish list would be a sensor for Radon.

I've had the current unit just shy of three years. The first unit was wildly inaccurate on temp and humidity and I had it replaced immediately. Second unit seemed to work. A few months in and I notice the N02 sensor is now showing 270+ plus while inside. Even when I opened the house 100%, the reading was still in the 250+ range. Asked tech support for help and they asked me for the necessary information to basically login and control my device. Miraculously the NO2 sensor suddenly started working as expected. They sent a patch to my unit/account. Then I notice my CO2 is climbing up after 14 or 15 months. I start opening my house more often, to the point I need a dehumidifier to deal with the humid air I was now introducing. Sadly for almost two years I trusted this device. It was $300, why would it be cheaply made? As I was coming up on year three I got some simple temp/humidity sensors with very easy calibration. First thing I find out is the humidity is off by nine full percent (yes I know what I was feeling and what it was saying was wrong and I should have done something back then. Bad on me) on the low side. To say that's not good, is an understatement. Temp is off by a full 2 degrees on low side. At this point I am asking what else is off. Never really cared about the Air Pressure reading, but when I reviewed the data this unit simply only did 29.4 inHg or 29.5 inHg. That is literally impossible when a storm passes thru Texas. So now I have four sensors that don't work properly. It only gets worse from here. I put it outside for the last two days. CO2 is currently, at the time I am typing this, reading 566 ppm. At its worse, outside in the country where I live, it should never get above 410 ppm. That means it is off by over 30%. I have been using a dehumidifier, for over two years to keep my humidity below 50%, for literally no other reason than trying to keep my CO2 low by a device that can't even measure it properly. The only sensor that actually works on this device? Carbon Monoxide. It actually detected when I had a fire going that wasn't burning properly, been in HVAC for over 25 years, with the house open. uHoo should literally be shut down and never be allowed to do business again. EVER.

The uHoo continuously measures temperature, humidity and atmospheric pressure plus 6 separate indicators of room air quality. It is relatively unobtrusive and can be set-up and linked to your IOS or Android device in just a few minutes. I originally bought the device to monitor my bedroom air quality because I have an allergic lung disease which makes me very sensitive to small particulates, volatile chemicals and ozone in the air, all of which are monitored by uHoo. I never dreamed that this device would save me from a serious illness or worse! I was awakened by an alert on my cell phone at about 5 AM one morning. My uHoo was sending an alert that the CO2 levels in my bedroom were high. In fact, the measured CO2 level was 1675 ppm (greater than 1000 ppm is considered dangerous). My husband and I both had headaches and we felt weak and nauseous. When I realized what was going on, I got up and turned off the house HVAC system and opened some windows. The CO2 levels dropped rapidly after that and we began feeling better. It turns out that we were having the shingles on our roof replaced and when the worker's left that afternoon, they had covered parts of the roof with plastic to protect those areas from nighttime moisture. In so doing, they inadvertently covered the exhaust vent to the house HVAC system. This caused CO2 to be released into the house and the levels built up quickly since the night was relatively cold. Who knows what would have happened if we didn't have uHoo to awake us and warn us? I now consider our uHoo an essential house safety device! You never know when something like this will occur.