Highly visible OLED display and large LED indicators. In addition to these features, IO-Link compatibility allows this new generation Fiber-Optic Sensors to meet the needs of smart factories. Our fiber-optic amplifiers are easy to operate and yet offer maximum control. Numerically, you can monitor the light reception level and the margin level you have, or. This is a series of fiber optic sensor heads designed to be connected to a fiber optic sensor amplifier. The FU Series offers a wide variety of options including thrubeam, reflective, retro-reflective and definite reflective sensing heads.