ThermoPro TP49W-3 Digital Mini Thermo-Hygrometer Thermometer Hygrometer Indoor Temperature and Humidity Meter

I live in a very cold weather climate; winter and heating cause havoc with the humidity in our home. I keep a temp and humidity reader in every room in order to ensure I maintain a comfortable humidity in the house. Proper humidity is important for humans and musical instruments. I purchased the 3-pack because it was a good value for the money. These rarely need the battery replaced, I move them room to room throughout the winter, so very portable. I would highly recommend this product.

First order I bought 2 of them. They are very accurate that I bought the three pack next time out so I harvest 5 around our home. We have 5 bedroom in a 3600sq ft home with a completely finished basement. As with any floor you'll see a slight difference in temperature which this product also has. The humidity is what I really want to see. Our humidity unit on our furnace has a sensor connected to the outside of the house and will move the humidity automatically. When I look at the control pad the difference from the furnace to these devices is no more the 1-2% anywhere in the house. Fantastic. This tells me my unit on the furnace operating 100%. I recommend these for you home. Easy to set up and understand love the smiley face!

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These gave pretty good readings. I use it to check the humidty in the basement and around my plants. I compared it to the main thermometer and the reading is very close.

These are very accurate! The one that is at 50% is in my bedroom with a humidifier running and the door closed! As you can see, the humidifier is almost Identical to this little device! The one that reads 30% is in my kitchen, the main floor of the house where I have no humidifier running, and the reason why I got these, to know if I should have one for the main floor or not! The one that reads 29% is in my rec room where I keep a dehumidifier which we don't run in the winter but do keep it on all winter, this one reads 33% while this little guy reads 29% which is off by a small amount. The three temperatures are slightly different. I keep my house at 72 degrees in the winter. The one that reads 69 degrees is in my upstairs bedroom with the door closed and a cool mist humidifier running. The one that reads 71.8 degrees is on the main floor in my kitchen and is only .2 off from where my heat is set. The one that reads 70.5 degrees is in the rec room, that's always going to be colder than the rest of the house because... it's a basement! But also good to know the temperature down there, because so many people complain that it's cold down there in the winter, if the temperature drops too much, I can run my extra heaters! All in all, I am happy that I got these. Now I know I need a humidifier for the main floor, and can hopefully get a whole house one that will actually cover the whole main floor. I may possibly have one for the rec room as well! But having these gadgets lets me know the accuracy of my furnace, and the accuracy of my humidifier, and dehumidifier as well. For the price, and the fact that you get 3 of them, which I needed, I am very happy. And they are magnetic to boot!!!