Foxwell designs and manufactures professional-grade automotive diagnostic tools focused on accuracy, ease of use, and wide vehicle compatibility. Its OBD-II scanners are built to support fault diagnosis, emissions checks, and engine monitoring across petrol and diesel vehicles that comply with OBD-II standards. The Foxwell NT200 is a compact, entry-level OBD-II diagnostic scanner developed for quick fault code reading and clearing. It allows users to retrieve generic and manufacturer-specific engine codes, view code definitions on-screen, and check emission readiness status. Its simple interface and handheld design make it suitable for everyday diagnostics, basic maintenance checks, and pre-MOT inspections. The Foxwell NT301 is a more advanced diagnostic scanner intended for professional and enthusiast use. In addition to reading and clearing engine fault codes, it supports live data streaming, freeze-frame data, I/M readiness checks, and built-in DTC lookup. The colour display and enhanced data functions allow users to monitor sensor values in real time, helping identify intermittent or performance-related faults with greater precision. Both scanners are designed for plug-and-play operation via the vehicle’s OBD-II port, requiring no batteries or external power source. Foxwell diagnostic tools are widely used in workshops, by mobile technicians, and by informed vehicle owners seeking dependable diagnostic insight without unnecessary complexity.