Precautionary Note for OBD Power Adapter- 1.Try to avoid places where the vehicle is parked where there is a huge vibration (which may falsely trigger the obd 2 type c power cable). 2.The USB Type-C connector of this obd ii power cable uses A5-B5 signal pins and may not be compatible with some dash cam brands use A8-B8 signal pins. 3.dash cam power adapter obd suitable for all Type-C port electronic devices generally. (May not work with some phone charging protocol) Two Work Modes OBD2 Dash Cam Power Cable- OBD power cable for dash camera type c with one-button operation. Mode "O" ACC mode - When the car is ignited, power cord begins to output power; After the car is turned off for 20 minutes, OBD power cable will automatically stop supplying power and turn off the output. Mode "-"; Monitor the working mode, with the obd2 dash cam adapter usb c continuously supplying power for 24 hours, and maintain operation until low battery voltage (11.7V) is detected Lo