1Power-off memory function, when the machine is powered off and then restarted, it keeps the last set state. 2Small size, easy to install, car-specific 'A' interface. 3Four-screen, three-screen, two-screen, single-screen display mode, NTSC/PAL automatic recognition. 4Four pictures can adjust the mirror independently. 5Left or right can be set to compress or not compress panorama. Condition: 100% Brand New Item Type: Video Splitter Color: White Power Input: 9-28V Wide Voltage Menu: Chinese / English Screen Operation: Button Video Output: One Way View Output, Top: 1Vp-p Impedance: 759 Video Input: Four Video Inputs, Top: 1Vp-p Impedance: 759 Video Format: NTSC/PAL/Automatic Recognition High Resolution: NTSC: 720 x 480, PAL: 728 x 576 Power Failure Memory: Power on After the Machine is Powered Off, Restore the Previous Screen Mirror Image: Mirror Image Can Be Set for All Four Channels Compression: Left and Right to Set Compression / Uncompressed Panorama Ambient Temperature: -30 C - 60 C Size: Approx. 100 x 110 x 25mm/3.9 x 4.33 x 0.98in 1 x Video Splitter1 x Power Cord1 x Video Cable1 x Instruction Manual