Mobile Digital Video Recorder 4 Channel Mini MDVR 1080P for School Buses Tank Trucks Engineering Vehicles Item Type: Mobile Digital Video Recorder Material: ABS + Metal Remote Control Battery: 1pc CR2025 button battery 3V (not included) Video Format: PAL/NTSC (automatic identification, note: the camera (not included) needs to be connected before power on, the default is PAL format) Video Parameters of Each Channel: Resolution: Maximum Support Input 1080P, Output 720P Refresh Rate: 25 frames per second Peak Value: 1Vp-p Impedance: 75Ω Video Interface: 4 inputs (support CVBS and AHD720P, AHD1080P), 1 output (720P AHD or CVBS) Video Recording: Memory card (less than or equal to 128G, not included), recording format is AVI, h.264 compression Audio: 1 in Operation Screen Mode: 2.4G remote control / infrared remote control / wire control: high level trigger Positive/Mirror Selection: OFF/ON Recording Mode: Independent recording for each channel Default Boot Screen: The default boot 田-shaped or H-shaped four-screen mode, selectable in the menu Picture mode: 田-shaped four-picture mode, H-type four-picture mode, picture-in-picture and single-picture full screen and other picture modes Host Operation Power Consumption: 2W Output Power: None Rated Voltage: DC 12V/24V Maximum Voltage Range: DC 9-36V Working Temperature: -20℃ to +65℃ Camera Input: 4 Channels Storage Function: Not Supported Operation Method: Remote Control Power Loss Guard: Yes Application: For school buses, buses, tank trucks, engineering vehicles, large trucks, boats, coaches, yachts, etc.