The Power Probe OBD-II Breakout Box, No. PPECB, is a CAN Bus circuit tester that plugs directly into the vehicle's data link connector (DLC). It tests for any abnormalities such as shoring and reverse polarity at the DLC pins before a diagnostic scan tool is plugged in preventing damage to diagnostic equipment. The Breakout Box is compatible with 12V and 24V systems, displays live voltage readings when testing pins, and provides quick access to all 16 pin terminals during vehicle diagnosis and repair. Additionally, it monitors vehicle's voltage during module programming with a low voltage alarm.