iNewcow Car Multiple Cameras Switch Control Box 2 Way Channel For Front/Rear/Right/Left View Parking Camera System Video Control To LCD/DVD/DVR... 100% Brand New and High Quality. (With Gift Card From iNewcow) It is available to connect with 2 cameras at most to built full view car parking security system to avoid any accident. The rear view camera image will be actived immediately while parking trigger is on. Support both NTSC and PAL camera. DC input: 9~15V (not suit for truck).Note: car cameras are not included