1Application: The USB cable hardwire kit is suitable for most models of USB devices, such as dash cam, mirror cam, Gps navigator and radar detector etc. 2Power Supply: The dash cam hardwire kit connects to the car battery or fuse box power supply, which can continuously power the dash camera for 24 hours, even when the car is turned off. 3Security Protection: The kit has a built in precision switching power supply module that converts 12V?28V to 5V, effectively protecting your equipment from excessive current and overheating. 4Easy Operation: Dash cameras hard wire kit can hide wiring to keep the car tidy and release the cigarette lighter for connecting to more devices. 5Anti Aging: USB dash cam hardwiring kit is made of Abs, rubber, metal material, wear resistant, scratch resistant, anti aging, not easy to break and crack.