Review on ThermoPro TP50 Digital Thermometer Temperature by Steve Waldbillig

I'm a physicist with a new zone in my convection heater and a piano that needs constant room humidity, preferably around 42%. I bought three of these monitors to evaluate these conditions. The first thing I did was place them in a transparent, airtight container with three other moisture meters I'd calibrated over the years. I placed the container next to the room thermostat and recorded the readings 8 times in 30 hours. I opened the container twice to let in air with new moisture. Here's what I've noticed: 1. Readings stabilized within an hour or two of each time the container was opened.2. The three new monitors matched within 0.5°F and thermostat readings. That's more than enough to assess the uniformity of temperatures in the different rooms of my new heating zone.3. Their humidity readings matched to within 1% relative humidity. This is excellent but may be inaccurate.4. After comparing the humidity readings to my careful calibrations of other humidity meters, I've concluded that the humidity readings from these new monitors are about 2% higher than true humidity - at around 42% RH. It is excellent. Therefore, I conclude scientifically that I am satisfied with this purchase!