1.Application Scenes. It is a latest testing platform for OBDII Protocol Detector and communication detection, with one male and one female OBD2 connector, to connect the vehicle and the diagnostic tool. 2.Powerful Features. Convert the car OBD2 interface into 16 pin for signal detection and electrical level conversion, for monitoring protocol signals, power and grounds. Work with diagnostic tool to check if your car communication is good. Supply DC power to your car when changing battery, to prevent data loss, radio/audio lockup, key remote control fault, the fault light on, or the ECU malfunction due to lack of power. 3.Multiple Protocol Supported. CAN Bus, K line, L line and PWM Protocol are supported. 4.. There are 16 standard 4mm banana sockets. Each socket has its own LED indicator to show its working status. 4 socket colors indicate different pinout, which is convenient to identify different pinout function. Also there is one digital display to show real time voltage.