The MUYA GM620 is a pin-type digital wood moisture meter built for carpenters, timber buyers, and flooring installers who need a fast, non-destructive moisture check. It measures wood moisture content across roughly a 2-70% range in under a second, with a resolution of 0.5% and about 1% accuracy, displaying results on a simple LCD screen. The probe pins are inserted directly into the wood surface, making it handy for job-site checks of lumber, firewood, or framing before installation.