Product review (4 stars): Nice unit for reading and logging temp and humidity.
Pros:

- Clear readout
- Removable SD card
- Easy to setup and use

Cons:

- the "auto" logging function is ok for keeping the data concise, but it's not a setting I prefer to use.  However, it does have traditional specified logging intervals as well.
- the stand to keep it upright is borderline useless.

Overall: It's a great unit for the price, and it allows me to do analysis of my commercial environments that would otherwise be very difficult.  In the long run, the data it provides saves me a lot of money and headache by allowing me to ward off problems before they become major headaches.