Remote Optical Sensor, Compatible with Manufacturer Model Number ACT-1B/115, ACT-3/115, Measurable Speed - Maximum 250,000 RPM, Measurable Temperature - Maximum 158 Degrees F, Measurable Temperature - Minimum 14 Degrees F, Product Type Optical LED Sensor, Sensing Distance - Maximum 3 ft, Overall Length 1.5 in, Overall Height 0.62 in, Overall Width 0.62 in, Includes 8 ft Cable, Mounting Bracket, Features Mounting Hardwar, Visible Red LED Light Source, Material Stainless Steel, Standards CE