Designed for outdoor use and simple set up, Electronic self-leveling in the horizontal plane, Electronically-controlled dual slope feature, Visual and audible alarms when beyond leveling range, Single speed rotation 700 RPM, Slope operation function allows user to perform slope 8 degrees in both x and y axis, Height of Instrument (HI) alarm function ensures laser accuracy, Remote control and detector for one person operation, Height of Instrument/Tilt alarm function ensures product accuracy, 40-6535 Kit Includes > Laser, NiMH rechargeable battery pack, 6V battery adapter, remote control with 9V battery, detector with 9V battery and clamp, instruction manual with warranty card, hard-shell carrying case