technical details: moisture measuring range: 5 - 50% (in wood); 1.5 - 33% (in building material) - measuring accuracy: 2% - auto power off: after 3 minutes idle - battery: included - battery type: 9v battery block (6f22 or 6lr6); alkaline - working current: 25ma - working temperature: 32°f122°f - working humidity: 90%rh non-condensing - storage: -4°f - 140°f ≤85% (without battery) - dimensions: 145 x 65 x 25mm (5-11/16” x 2-9/16” x 1”) measures moisture content by detecting a material’s electrical resistivity using two pins ideal for use in woodworking, building construction and agriculture industries. the dmm-001 is also an invaluable tool in the restoration field item package quantity: 1, Manufacturer: CMT