AUTOOL OBD Power Supply Converter 24V to 12V For All Scanner

Car OBD2 Power Supply Transformer is not a diagnostic tool. This does not include any kind of diagnosis software.This unit is a voltage converter which can be used to step down the OBD2 24V into OBD2 12V.This unit is recommended to use along with a 12V diagnostic tool. When you need to diagnose a 24V heavy duty vehicle, please use this adapter to convert the OBD2 port voltage and protect your 12V tool from over voltage.