Features: 1.4?Channel DVR: The driving recorder supports 4?channel video input and 4?channel audio input, and supports 1?channel composite video output and 1?channel audio output. 2.Characteristic: Digital video recorder supports for license plate number, time, and driving information overlay. The host can be turned on, off, and delayed. You can also add left turn, right turn, and automatic full screen display when reversing. 3.Switch Door Recording: You can also add switch door recording function, and the video files are packaged separately during the door opening process, which is convenient for viewing and has higher efficiency. 4.Multiple Protections: Professional manufacturing, safer RCA head interface, 9 to 36V wide voltage input, and has multi protections, such as overload protection, short circuit protection, reverse polarity protection. 5.Wide Application: Mini MDVR can be widely used in school buses, buses, tank trucks, engineering vehicles, large trucks, ships, coaches, yachts and so on. 6.H264 Algorithm: Digital video recorder adopts H264 video compression algorithm, the video takes up less space on the hard disk and has a long storage time, and supports 64G memory card (not included). Specification: Item Type: Digital Video Recorder Material: ABS + Metal Remote Control Battery: Button Battery 1pc CR2025 3V (not include) Video Format: PAL or NTSC (Automatic Identification, Note: The Camera Needs to Be Connected Before Power on, The Default is PAL Format) Video Parameters of Each Channel: Resolution 720x576 or 640x480, Refresh Rate 30 Frames/Second, Peak Value: 1Vp-P, Impedance: 75 Video Interface: 4 Inputs (RCA Interface), 1 Output (RCA Interface) Video Recording: (Not Include) Memory Card (Less Than or Equal to 64G), The Recording Format is AVI Audio: 1 in Operation Screen Mode: 2.4G Remote Control / Infrared Remote Control / Wire Control: High Level Trigger Positive Mirror Selection: OFF ON Recording Method: Independent Recording for Each Channel Default Startup Screen: Default Startup Quad Screen Mode, Selectable in the Menu Picture Mode: Four Pictures, Three Pictures, Two Pictures, One Picture Power Consumption: Host Operation: 2W Output Power: None Rated Voltage: DC 12V/24V Maximum Voltage Range: DC 9-36V Working Temperature: 0-+55 Camera Input: 4 Channels Operation Method: Remote Control Power Loss Protection: Yes Video Interface: RCA Interface Application: Suitable for school buses, buses, tank trucks, engineering vehicles, large trucks, boats, coaches, yachts, etc. PackageList: 1 x Video Control Box 1 x Power Cable 1 x Signal Line 1 x Remote Control 1 x Manual