If you've piped your shop for dust collection, you probably are not real enthused about walking across the room twenty times a day to turn the collector on & off. A Long Ranger control can do it for you from anywhere in the shop instead, up to 50 feet away from the collector. The 110-volt model handles motors up to 1-1/2HP; the 220-volt model is good for up to 3HP. Receiver modules come with 5-ft. power cords for easy siting, but note that line of sight is not required; FCC approved RF transmitter works even through walls. Transmitter includes belt clip to keep it at hand. Not for use with universal (router-type) motors.