1.digital video recordor(BY-03090) 2.recordor 3.wheelpath,Auto parts Feature: easy to install,the sensitivity can adjust automatically active or deactivate DIY series product,high quality,high technology 1.Insert a MiNi TF card 2.Put the power switch to ON , so that the system is in the boot-up state, when the blue indicator light is long on 3.Video recording (1.)Manual video recording (2.)Camera mode (take photo) (3.)On-line replay (4.)Off the screen (5.)Select video signal channel (6.)Reverse function (7.)MP3 function (8.)Select video double channal 4.File storage and playback(usd computer)