Zumbach Electronics India Pvt. Ltd. Manufactures Optical Fault Detectors for Fault Detection and Surface Inspection. Zumbach Electronics India Pvt. Ltd. Also manufactures in-line measuring, monitoring and control systems for the wire and cable industry, for plastic extrusion lines and for the metal industry. The Optical Fault Detectors for Fault Detection and Surface Inspection, Model KW Trio, are used for detecting small lumps, neck downs, and other defects on wires, cable, tubing etc., without being influenced by product parameters, line speed, vibration etc. The Optical Fault Detectors for Fault Detection and Surface Inspection are non-sensitive to stray light.