The Rotary Laser Level features self-leveling in the horizontal plane and manual-leveling in the vertical plane with 90deg split beam. Range scan modes include dot and two adjustable line lengths. Visual and audible alarms when beyond leveling range. IP Protection Class: IP 66, Scanning Modes (qty.): (3) 0deg , 30deg , 60deg , Accuracy: 1/8 in. per 100 ft., Beam Type: 90deg split beam, Case Type: Hard shell case, Vertical Leveling: Yes, Rotation Speed: 150, 200, 250, 300 rpm Variable, Laser Wavelength: 635nm±10nm, Visual or Audible Indicator: Both, Interior Range (ft.): Up to 200, Battery Type: Rechargeable battery pack, 6V adapter or C batteries, Horizontal Leveling: Yes, Exterior Range (ft.): Up to 2,000, Laser Beam Color: Red, Leveling Type: Self-leveling (pendulum), Battery Included: Rechargeable battery pack and 6V adapter, Working Temperature: 32deg F to 104deg F, Dimensions L x W x H (in.): 7 1/16 x 6 3/8 x 7 61/64, Class Rating: Class IIIa, Self Leveling Range: ±3.5deg , Battery Life: Approx. 15 hrs. of continuous use, Single, Pair, or Set: Set, Laser Output: 5mW, Material Type: Rugged housing, Tripod Mount Dimensions (in.): 5/8in.-11 center screw thread