FT Thru-Beam Type Fiber Optic Sensors Panasonic Industrial Automation FT Thru-Beam Type Fiber Optic Sensors feature tough, high-quality fiber and a reduced risk of breaking and bending during installation in a thru-beam package type. The stainless steel fittings used for fiber heads conform to RoHS while providing improved mounting strength. The FT series also utilizes uniform beams at the fiber aperture for stable sensing. The expansive range of product types includes threaded, square head, cylindrical, sleeve, flat, narrow or wide beam, liquid leak / liquid detection, and resistance to oil, chemicals, heat, and vacuums. Panasonic Industrial Automation FT Thru-Beam Type Fiber Optic Sensors can be used on moving parts and bent with precision, all while offering high quality for applications.