3 Mins InstallationNo drilling or wiring, its plug and play! Install URFRU monitor in the cab and connect it to a 12V DC, then put the URFRU cameras on the car exterior by magnetic base, turn on and it will auto connected with monitor. Up to 4 CamerasYou can add more cameras for URFRU backup camera system (search ASIN: B0F6LHFLT9). Every camera connection by wireless, all cameras was magnetic base and solar power. Installation is surper easy after watching our product video. Strong Magnetic Base URFRU Camera has a strong magnetic base that it can attaches securely to metal surfaces, Unaffected by shakes or vibrations. Solar Camera 2 charging modes-solar or USB-C and it has 9600 mAh battery. URFRU camera can great working in storm, raining or snow, because it was waterproof IP 69. also, its infrared night vision function ensure the camera would displaying clear even if in darkness. Signal Conection Stable Real-time display, no lags. URFRU backup camera system si