Inside the camera port definition: + 12V -12V; + to sense a signal - and the sense signal; + flash signal - the flash signal; + gate signals - gate signal ???? 1, the overall wiring:????? From the Control room (computer booth control side) of each cloth two lines and a power line to the entrance camera position, a network line network license plate recognition camera line, another group for the signal line or reserve line, the camera network cable using RJ45 crystal head connection the entrance to the front of the computer camera access on port signal line switch, the display can be used when one of the two cores as the signal line (redundant backup) in the external, from one end of the screen to access the computer after 485 converter port . 2, the camera connected to vehicle detectors (sense coil), the camera trigger coil access to the rear of the vehicle detector output to the camera to feel fat port, where vehicle detector can be placed in the barrier. 3, the camera controls the flash, the flash control signal line access to the camera flash control port. 4, camera control gate, gate port from the camera connected to a set of signal line side entrance Barrier (Barrier public and gate terminal) 5, the camcorder to transfer machine last access to the computer, using a network cable (RJ45 crystal head contact French) ???? 6, LED screen communication wiring from LED screen terminals use a set (two-wire line, cable can also be used in the two strands substitute) signal access to the back of the computer 485 converter Port 7, all equipment electricity, flash, automatic barrier using AC 220V, camera, display (small display plate) DC 12V.