Designed for indoor and outdoor applications, Electronically-controlled dual slope feature, Electronic self-leveling horizontally and vertically, Laser beam modes include dot, two adjustable line lengths and two rotation speeds, Two rotational speeds: 200 and 500 RPM, Visual and audible alarms when beyond leveling range, Height of instrument/Tilt alarm function ensures product accuracy, 40-6534 Includes > Laser, detector with clamp and 9V battery, multi-function mount, NiMH rechargeable battery pack, alkaline battery compartment (batteries not included), charger, remote control with 9V battery, tinted glasses, magnetic target, instruction manual with warranty card and a hard-shell carrying case