The WLNJ-Y-N with Limit Switches Flex Rd CS 140x6.5mm M20 LED from Omron is an electronic switch designed as a limit switch that is responsible for changing the state of an electronic circuit upon reaching a certain physical position. This component has a maximum voltage of 250 VAC, a maximum current of 4 A, and is meant for applications with a flexible rod with a length of 140 x 6.5mm and an M20 thread. It also has a built-in LED indicator light, which will tell when the switch has been activated. This is an energy-efficient switch and is a tough and durable part designed for use in industrial applications.