Review on 🌡️ Coreel All-in-one Temperature Humidity Meter by Allen Hart

I've always wondered what the air quality is like at home. I ordered to find out. It arrived fully charged and I put it on the table in the living room to check for CO2. not very good 850 on average per hour. I moved it to the bedroom and it was very similar. I then took it to my mom to check her level as she has trouble breathing. it seems. It seems that in all cases we don't really let much outside air in when it's cold or hot outside. and since none of us have heat exchangers, our CO2 levels are a bit high. It goes down when I measure the air outside in a good range. The only problem with what I got is that while the 'Units' button works for menu selection, it doesn't change the temperature units to Imperial/Fahrenheit as the manual claims. The best thing about this device is its portability. I can think of many times I would like to take and use it. especially in hotels. Since it seems to do what it claims to do, it's mostly charged and portable. I rate it five stars. even if they can't write "Dector" correctly on the front of the device. As always, your mileage and preferences may vary.