Product review (5 stars): This is a nice, compact unit for my cigar humidor
This is a nice, compact unit for my cigar humidor.  It is very basic, and I suspect that the gauges (esp. the humidity one) is probably no more accurate than 5%, but that's more than ok for my purposes.  The price and size advantages were well worth any tradeoff in performance.  I've had these kind of units for digital clocks in the past, and the batteries (watch type) seem to last forever.