Product review (4 stars): Sturdy and responsive - backlight a plus...
Summary - real time temp and humidity readings in a sturdy package...design could use some minor tweaks

Readings normalize within a second or two.  If you move from a very warm humid area to a cool dry one it will take a few more seconds for the readings to stabilize.  Automatic conversion to dew point and wet bulb save time over looking it up in a chart, but it's not a feature you use all that often.

The features I like best are the backlight (You're often in a basement or crawl space) and the save since it's often not convenient to write down your readings.  You can get all your readings, then get back to a good place to jot them down.

The housing is well protected - the yellow cover doesn't appear to be easily removable, but seems it would easily protect it if it fell a good  distance perhaps overkill since the weak link is the sensor tip, which probably wouldn't survive a direct hit.

One thing I'd like to see these handheld meters incorporate is a magnetic base and perhaps an extension - just a foot would let you get a reading from hard to reach spots, or when your ladder isn't quite tall enough.