Remote Optical Sensor 1 to 250 000 RPM Visible Red LED Light Source and Green LED On-target Indicator Max Sensing Distance 3 ft Temp Range -10 to 70 C 14 to 158 F Material Stainless Steel Length (In.) 2.9 in Dia 0.625 in For Use With Mfr No ACT-1B/115 ACT-3/115 Includes 8 ft Cable with Tinned Striped Ends and 12 in of Reflective Tape Mounting Bracket