The Canfield Connector Series 8000 Reed and Electronic sensors are compact units designed for sensing applications on round cylinders from 9/16″ – 4″ and tie-rod pneumatic cylinders from 3/4″ – 8″ bore. These sensors offer a wide voltage range from 0-120 VAC/VDC 50/60 Hz and high current capacity up to 0.5 Amps. They include high intensity indicator lights and a wide viewing angle. The sensor’s small package can fit easily on the smallest cylinder without appearing too large. The Series 8000’s design promotes ease of installation with a tight fit. Options include 9ft. PVC or 8mm quick connect male pigtail.
See more at: http://www.canfieldconnector.com/products/series/3007/8000-reed-electronic-cylinder-proximity-sensors