1、[Main Function] The main function of SDI multi viewer is to convert four SDI (SD, HD, 3G SDI) input signals into one HD Multimedia Interface output signal, which can easily display the picture of four different SDI sources on one monitor. 2、[Multi Application] It is widely used in video surveillance field, such as control command center, rail transportation, video conference, teaching, exhibition hall, medical facilities, stadium and conference room. 3、[3 Switching Methods] This SDI quad multi viewer supports 3 switching modes, including button switching, infrared remote control switch, RS232 serial port connected to a computer using software to control screen switching. 4、[1080p HD Resolution] The output resolution up to 1920x1080p at 60Hz, providing high definition picture, better view video surveillance. Input resolution supports 576x480 at 60Hz to 1920x1080 at 60Hz. Aluminum alloy material, durable. 5、[4 Display Modes] SDI quad switcher supports four screens at the same time, 1 main screen 3 auxiliary screen display, dual screen display, single screen full screen display. Can easily switch between single screen and multi screen modes. 1 x SDI Multi Viewer1 x Power Adapter1 x Remote Control1 x Instruction Manual Item Type: SDI Multi ViewerMaterial: Aluminum AlloyProduct Size: Approx. 177 x 79 x 22mm / 7 x 3.1 x 0.9inInput Interface: 4 x SDISDI Type: SD, HD, 3G SDIInput Resolution: 576x480 at 60Hz to 1920x1080 at 60Hz Specifications: SMPTE 259M, 292M, 344M, 424M Bit Rate: 143Mb/s to 2.97Gb/sOutput Interface: 1 x HD Multimedia Interface Interface Type: HD Multimedia Interface 1.4B Output Resolution: 1920x1080p at 60HzControl Interface: RS232Control Application: Professional Picture Splitting Computer Control SoftwareRemote Control Battery: 1 x CR2025 (Not Included)Plug: 100-240V