Just got a functional hygro at Ruby for $20.
Took 2 models and asked the man at the counter.
rayman: What's the diff between these 2?
ruby: No diff at all. Both measure temp and RH.
rayman: ?? Then price leh??
ruby: (points to simple one) $20
(points to nicely packaged one) $42
rayman: You know my answer, Uncle.
ruby: Smart.
Anyway, Wolfie, the reading on the digihygro is approx 5% more than the RH reading on the analog in our dry cab. So maybe you can take that as a yardstick.
Took 2 models and asked the man at the counter.
rayman: What's the diff between these 2?
ruby: No diff at all. Both measure temp and RH.
rayman: ?? Then price leh??
ruby: (points to simple one) $20
(points to nicely packaged one) $42
rayman: You know my answer, Uncle.
ruby: Smart.
Anyway, Wolfie, the reading on the digihygro is approx 5% more than the RH reading on the analog in our dry cab. So maybe you can take that as a yardstick.