Photoelectric Compact Sensors E3FA. The photoelectric compact sensors of the E3FA series from Omron are quick and easy to install, and their large adjustment element and powerful LED facilitate alignment. The LED status indicators of these photoelectric sensors are also easily visible from long distances and across a wide angle range. The E3FA series sensors are commonly installed in industrial facilities in the food and beverage, textiles, and logistics sectors, and are particularly designed for continuous detection in areas with continuously operating machines. Features include a cylindrical design, compact construction, plastic housing, visible LED light for easy alignment, LED display for light or dark selectable via wiring, reverse polarity protection for the power supply, short-circuit protection at the output, and reverse polarity protection at the output.