Product review (5 stars): Great bang for the buck!
This monitor does a good job!  We would easily buy them again.

The Good:
--They seem to be quite accurate and consistent
--Display is easy and clear to read
--The unit is versatile to display (either by magnetic back for vertical metal or with a "kick-out" like a picture frame on flat surfaces)
--It records the low/high temp and humidity over 36 hours

The Bad:
--This is a MILD complaint, but it would be great to keep the high/low over a week instead of 36 hours.

Clarification: some reviews are saying it keeps the low/high for 24 hours, but that is not accurate.  According to the manufacturer, it updates the low/high every 12 hours for 36 hours...so if it's been running for at least 36 hours, you will see the low/high over the past 36 hours continually.  It updates every 12 hours from the moment it is turned on.  So if you turn it on (a.k.a. insert batteries) at 5am, it will update the low/highs at 5pm, then again at 5am the next day, and 5pm the next day, and so on.