Accurately and professionally measures moisture in wood logs. Since water is non combustible, heat forces it out of the fuel in the form of steam. This evaporation process is heat absorbing, so in the early stage of combustion, little heat is left over from the process to be given off. The more water in the fuel, the more wasted energy and the less heat output. What's Included Digital Moisture Reader 1 x 9V battery Features Protective Cover Audible Sound Hold Switch to freeze/hold the LCD reading Large LCD Display Specifications Model Number AC07835 UPC 773388039183 Measuring Range Wood logs: from 5% to 50% Resolution 0.1% Accuracy ±3% Audible Alarm 8 different tones level Auto Power Off 3 minutes Power Source 1 x 9V battery Measuring Test Pins Stainless steel; replaceable Material Measured Wood/timber and building material ie; brick, concrete, drywall, plaster, etc. Documents & Files Owner's Manual