The clean architectural styling of this spotlight makes it a perfect fit for interior spaces where a visually quiet, high intensity light is needed. Patented snap-in socket accepts all screw terminal base PAR36 or AR111 lamps up to 75 watts. Patent Number 6,875,035 B1 Can be ordered for use on 120V or 277V systems. Sturdy aluminum housing. Self and Allen key wrench locking stem for horizontal and vertical focusing. On/off safety switch (on most mounting types). Internal accessory cartridge accepts up to three size C LSI filters and accessories. Rotation lock for alignment of directional accessories.