Easy to use, one button to turn on or off, 1 other in choosing the material, 1 other for his or freeze measure. Tested on dried firewood for 5 years result 14% on 50% planted a tree. The measures are consistent. However over 16%, the appliance considers wood as very wet, while in 20% it is good to burn since it has dried for 1 year and a half. As against the test material he considers my dry cinderblock wall while a pro apparatus of a painter looks very moist. Finally, the device comes with instructions in several languages including French. So 9v battery is easy to find. Brief satisfied for the use made thereof.
