Product review (4 stars): Great overall instrument. Only two minor defects.
I have used this instrument for several years and am happy with it.

Pros:
- Inexpensive
- Easy to use
- Battery lasts long
- Very easy to carry anywhere

Cons:
- The sensors take a while to reach the actual measurement, it is not well suited to take very quick measurements
- The buttons protrude from the case, so they do get pressed while the instrument is in your pocket or with other things. It ends up turning on by itself easily (See picture).