Product review (5 stars): Accurate and easy to use
It is expensive, but a great tool if you need quick readings and accuracy in temperature and humidity, like someone who works with heating and cooling.
The wet bulb measurement is actually a calculation, btw.
I wish it had a flat bottom so it would sit upright.
The 30 minute auto power off can be disabled.
The TH-3 model does not show wet bulb, but will show differential from an initial reading.
Both have  Min/Max capability.