... laser line if out of self level Line Laser LL 330Features:*Magnetic damping compensator to ensure quick self-leveling time.*One cross line ... plus one 90°reference line.*Automatic shut off laser line if out of self leveling ... 9KGStandard outfitLP330 main unit,laser glasses, target plate, wall mount, instruction manual,soft bag Item NO.781002 Line Laser LL 330