The Konnwei OBD II adapter is a powerful car diagnostic tool. It is compliant with full OBD II and EOBD specifications. Various wireless connection modes are available to connect your smartphone or tablet. It reads real-time car engine data such as engine speed, ignition time, fuel trim, water temperature, and fuel consumption. It supports a variety of OBD II apps. This scanner will help you save money and accurately diagnose a check engine light problem. The majority of cars made in the past two decades are fitted with an OBD2 diagnostic port. Simply find the port and plug the device in. Its micro size and unique power-saving functionality protect your battery. The Bluetooth Low Energy device works with the most popular OBD apps. Functions include reading diagnostic trouble codes, both generic and manufacturer-specific, and displaying their meaning. Clear trouble codes and turn off the Check Engine light. Monitor engine RPM, calculated load value, coolant temperature, fuel system status, vehicle speed, short and long term fuel trim, intake manifold pressure, timing advance, intake air temperature, air flow rate, absolute throttle position, oxygen sensor voltages, and fuel pressure. For your vehicle to be OBD II compliant it must have a 16-pin Data Link Connector under the dash. The Vehicle Emission Control Information Label must state that the vehicle is OBD II compliant. To be sure your vehicle complies, look for a sticker under the hood that clearly states OBD II compliant or certified. OBD-II protocols supported: SAE J1850 PWM, SAE J1850 VPW, ISO9141-2, ISO14230-4 KWP, ISO15765-4 CAN, SAE J1939 CAN. Vehicle Coverage: Works on all OBD2 Vehicles (1996 onwards in USA) and EOBD vehicles (Petrol cars from 2001 and diesel cars from 2003/2004 in Europe). Specification: Supply Voltage: 11.5V to 15V. Supply Current: under 200mA. Standby Current: under 30mA. Operating Temperature: -40℃ to 85℃. Operating Humidity: 5% to 95% RH Non-Dewfall. Condition: New. Origin: China.