• Electronic Self-Leveling Dual Grade Horizontal Rotary Laser Kit • Programmable dual slope function allows user to perform slope at different inclinations in both x and y axis • Electronic beam shield to turn the laser beam off in one to three quadrants • Large +/-8 degrees electronic self level range. When beyond the leveling range, the laser beam will flash, rotation of the beam will stop, and an audible alarm will activate • Height of Instrument/Tilt alarm function ensures product accuracy • Operates with radio frequency remote control • LCD display with backlight illumination • Manual mode allows unit to tilt to extreme angles and two rotational speeds: 600 and 1100 RPM • 40-6582 Includes > Laser, li-ion rechargeable battery pack, alkaline battery comparent (batteries not included), li-ion battery adapter, remote control with 2 "AA" batteries, detector with 9V battery and clamp, sighting scope, slope plate, fine adjusent plate, instruction manual with warranty card and a hard-shell carrying case