Application Support 12V or 24V vehicles, like Sedan, Pickup, SUV, Trucks, etc. Provide power supply for in car phones, tablets, dash camera recorders, portable GPS monitor, reversing camera monitor, etc. Features Support dashcam car DVR or rearview mirror with time lapse video features. Built-in Under-voltage protection to protect vehicle battery from drain out: With a built-in MCU chip, which can detect the car battery power in real time. The cable would automatically turn off the output when the low voltage is detected. Maximum output current up to 3.0A Voltage input: DC 12V - 24V Voltage output: DC 5V Cable length: Max. 3.5 meters OD3.5mm cable Output port types: Type C USB, Micro USB, Mini USB Packing 1x OBD Hardwire Kit for Auto Dashcam recorder Note: 1. the manual switch is for switching the power modes: Switch '1': USB Output would be cut off automatically when car battery <11.8V(12V) or <23.6V(24V) Switch '0': USB Output would be cut off in 20 minutes after car engine is powered off 2. This cable is designed for those dash camera with time lapse video recording, but it also works for dash camera without that feature as well. No worries.