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_x000D_ Material: ABS + Metal_x000D_ Remote Control Battery: Button Battery 1pc CR2025 3V (not include)_x000D_ Video Format: PAL or NTSC (Automatic Identification, Note: The Camera Needs to Be Connected Before Power on, The Default is PAL Format)_x000D_ Video Parameters of Each Channel: Resolution 720x576 or 640x480, Refresh Rate 30 Frames/Second, Peak Value: 1Vp-P, Impedance: 75_x000D_ Video Interface: 4 Inputs (RCA Interface), 1 Output (RCA Interface)_x000D_ Video Recording: (Not Include) Memory Card (Less Than or Equal to 64G), The Recording Format is AVI_x000D_ Audio: 1 in_x000D_ Operation Screen Mode: 2.4G Remote Control / Infrared Remote Control / Wire Control: High Level Trigger_x000D_ Positive Mirror Selection: OFF ON_x000D_ Recording Method: Independent Recording for Each Channel_x000D_ Default Startup Screen: Default Startup Quad Screen Mode, Selectable in the Menu_x000D_ Picture Mode: Four Pictures, Three Pictures, Two Pictures, One Picture_x000D_ Power Consumption: Host Operation: 2W_x000D_ Output Power: None_x000D_ Rated Voltage: DC 12V/24V_x000D_ Maximum Voltage Range: DC 9-36V_x000D_ Working Temperature: 0-+55_x000D_ Camera Input: 4 Channels_x000D_ Operation Method: Remote Control_x000D_ Power Loss Protection: Yes_x000D_ Video Interface: RCA Interface_x000D_ Application:_x000D_ 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