laser distance meter

laser distance meter Range (use target plate for longer) 0.05 m to 40 m 0.02 ft to 164 ft Measuring accuracy up to 30m (2σstandard deviation, in the room) Type±3mm* Smallest unit displayed 1mm Laser class Class2 Laser type 635nm, < 1mW Diameter of laser spot (at distance) 6 / 30 mm ( 10 / 40 m ) Automatic switch off After 180s Illumination of display √ Maximum, Minimum, Continuous Surface area, volume √ Addition / grand total √ Historical storage √ 20 Battery life, Type AAA, 2×1.5V Up to 5000 measurements IP rating IP 54 dust proof, splash proof Dimension and weight 110×58×30 mm, 140g Temperature range: Storage Operating 25 to 70 0 to 40