The FA 4131-2DN is a Limit switch manufactured by Pizzato. It is an illuminated two-pole device which can detect the movement of an object and act as an interruption in the course of current.This switch is designed for controlling, interlocking and signalling duties in machines and systems. It can have one or two standard oper ating elements, including mushroom, lever, roller and plunger in a number of positions. It has open and close contacts, which when operated, either terminate or interrupt the circuit.It is built with a stainless steel protective cover, comes with dust-proof, waterproof and shockproof ratings and is resistant to temperatures ranging from -30 to +70°C. It is also Rohs compliant, UL recognized and CE-certified.