... 480) 2.4camera input simultaneously 3.display modes:4 images,3images,2images 4.factory warranty This system is suitable for buses ... Monitoring SystemFeatures:7inch TFT-LCD screen monitor(800*480)4 camera input simultaneously,display modes:4images,3images,2images Can ... and weatherproof 2. Image Sensor: OV7950, 1/4" COLOR 3. Effective Pixels: NTSC: 656×492 4. Protection Category: IP67-IP68 5. Signal ...