This Plug&Play Camdii OBD2 power adapter is the ideal way to connect your Camdii K2S dashcam to your car's battery. Simply plug the adapter in your car's OBD port and connect it to the Camdii K2S and the OBD adapter will do the rest. It ensures the automatic parking mode on the Camdii K2S is working properly so that when you turn off the car's engine the camera will go into parking mode automatically. It also has a low-voltage protection to ensure the dashcam will not drain your car's battery. It will cut the power when the voltage comes below a set threshold; 11.8V/12.0V/12.2V/12.4V or double for 24V vehicles. The output of the OBD driver is 5V 2.0A.