ICP LaserTach senses speed of rotating equipment while powered with standard ICP sensor signal conditioning. Only single coaxial or twisted pair cable connection is required. Since no additional external power source is needed, user can deploy multiple tachometer sensors using same cabling scheme as with other ICP sensor arrays. Tachometer operates using standard 2-20 mA current. Sensor measures from 6 ft at up to 30,000 rpm.