Review on Digital Moisture Meter, Pin Type Water Leak Detector For Wood, Firewood, Walls, Drywall, Paper Brick Concrete Building Material - Wintact Pocket by Gavin Hernandez

I don't have another humidity sensor to test against, so I'm guessing this works based off the materials I tested it on. I like that it is small and easy to use. I wish there was a guide for materials and ranges of each mode # on the back of the device or something, anything more durable than the instruction sheet. Also, the description and title say it works with drywall but the instructions don't mention which mode # to use with drywall. I played around and it seemed to work fine, but it would have been nice to have the instructions be consistent with the description.