The FURC4-20 is a reflective plastic fiber optic unit designed for use with FA series sensor amplifiers. It features a maximum detection distance of 40 mm and can resolve objects as small as Ø0.05 mm. This unit has a standard fiber length of 2000 mm, a minimum bend radius of 15 mm, and an operating temperature range of -55 to +70°C. Built for durability, it has a high tensile strength of 8 kg and a SUS303 detection head, making it reliable for various industrial sensing applications.