This document introduces the EX-40 series photoelectric sensors and their functions. The series of sensors have features such as built-in power supply, built-in amplifier, and separate amplifier, suitable for different application scenarios. This includes fiber optic sensors, laser sensors, photoelectric sensors, miniature photoelectric sensors, area sensors, light curtain sensors, pressure sensors, proximity sensors, and special purpose sensors. The series of sensors are also equipped with peripheral products for sensors to meet different detection needs. In addition, the series also includes simple wiring units, wiring systems, sensors for inspection, discrimination and measurement, static elimination products, industrial endoscopes, laser engraving machines, PLC terminals, programmable intelligent operation panels, energy-saving support products, FA components, image processing devices, ultraviolet curing devices, inverters, and general-purpose power relays.