Product review (3 stars): Temperature okay, humidity not.
I live in an older home and have a moisture issue in my crawlspace even though it has a professionally installed vapor barrier and self opening vents which is the reason I wanted this product. Fluke electrical products are pricey but have an excellent reputation. So I was surprised at the poor reviews on this product and especially their lack of customer service and not honoring their warranty.

 This item seems very well made and sturdy and is easy to use. I think the rubberized cover would protect it if accidentally dropped. I like the back lighting which came in handy. It came with the batteries installed and basically ready to use. I used my 3 weather stations to compare its accuracy and none matched exactly but only 1-5 tenths off in temperature, but the humidity on this item kept changing while the weather stations stayed set and only .1-.2 difference. It's hard for me to believe the humidity would keep changing that rapidly without any wind or weather change and not effect the weather stations. So it appears my unit isn't very accurate with humidity but at least it gives me a ball park number when averaged with the weather stations. I hope I see a big difference in moisture once I paint the concrete footers with waterproof paint and change out the vapor barrier with 10mm plastic.