automatic-leveling with high accuracy , electronic sensor available,Laser class: Class II

1.Leveling Method               Self-Leveling (Pendulum) 2.Laser Wavelength              635nm +/-10nm (Red) 3.Laser Classification          Class IIIa 4.Maximum Power Output          <=5mW 5.Accuracy                      +/-1/8"/50ft. (+/-1mm/5m) 6.Interior Range                Up to 200' (60m) depending on light conditions7.Exterior Range                Up to 300' (90m) diameter with detector (not included) 8.Self-Leveling Range           +/-3 degrees 9.Power Supply                  Rechargeable battery pack or 6.4V                                   battery adapter (included) or 4 "AA"                                      alkaline batteries (not included) 10.Battery Life                  Approximately 8 hours continuous use 11.Dimensions                    4.73" x 4.96" x 7.09" (120 x 126 x 180mm) 12.Weight                        4lbs. (1.8kg) 13.Working Temperature           14F to 113F (-10C to +45C) 14.Center Screw Thread           5/8"-11 15.IP Protection Class           54 16.Warranty                      3 Years

laser level