The Konnwei KW850 is a powerful automotive diagnostic scanner designed to quickly identify engine problems and help you save on repair costs. It reads and clears engine fault codes, turns off the Check Engine Light, displays live sensor data, retrieves freeze frame information, performs O2 sensor and EVAP tests, checks battery voltage, and supports I/M readiness. Compatible with most petrol and diesel vehicles manufactured from 1996 onwards that support OBDII. Features a bright color display, multiple language support, USB updates, and plug-and-play operation.