Ideal for use in woodworking, building construction and agriculture. Meter is also used in the restoration business to check for moisture in carpets and sub-flooring. LED Display. Check wood, drywall and concrete before painting, sealing or treating. Locate and identify water leaks in roofs, floors and walls. Ideal for selecting dry lumber. Great for home owners, contractors and inspectors. CE and RoHS approved. Includes protective cover, battery and instruction manual. Display: Progressive LED, Range: 8-22 percent, Resolution: 0.1 percent, Accuracy: +/-2 percent, Sampling Rate: 1s Operating Environment: 32 to 122 degrees, RH less than 90 percent, Weight: 4.4 oz, Power Source: 9V battery (included)