1Power Supply: The dash cam hardwire kit is connected to car battery or fuse box power, supply power for dash camera for 24 hours even supply power when the car is turned off. 212V?30V to 5V: Dashcam hard wire kit is designed with built in high precision switching power supply module, which can transform 12V?30V input to 5V output. 3Safe to Use: Build in safeguards to protect your devices against excessive current, overheating, and is designed with 11.6V low voltage protection, ensure safe operation. 4Parameter: The dashcam hard wire kit is designed with Mini Ubs, with 3.2m/10.50ft buck line length, 5V, 2.5A output voltage and current, 10W maximum power. 5Wide Application: Suitable for most car models (with voltage between 12?30V), works for dash cam, mirror cam, Gps navigator and radar detector etc.