4 Channel Parking Camera Video Splitter 4 Input 1 Output DC12V/24V 1080P AHD Backup Camera Image Switch Combiner Box for RV Buses Truck No Memory Card Item Type: 4 Channel Video SplitterMaterial: ABS+ metal Video Format: PAL/NTSC (automatic recognition, note: must connect the camera before power on, default to PAL format) Video Interface: 4 channel input (aviation head interface), 1 channel output (aviation head interface) Positive / Mirror Selection: OFF/ON Default Boot Screen: Default boot with four screen mode, selectable in menu Screen Mode: Four screen, three screen, two screen, one screen Support Power Voltage: 9 to 36V wide voltage input, with multiple protection circuits for overload/short circuit/reverse connection Rated Voltage: DC 12V/24V Resolution: Supports 1080P, 720P, D1, CIF, etc. Camera Input: 4 channels Operation Method: Remote control Remote Control Battery: AAA x2 (batteries not included) Power off Protection: Yes Video Interface: Aviation head interface USB Backup: Support Maximum Memory Support: 512G Delayed Shutdown: Independent delayed shutdown circuit, can continue running after vehicle is turned off, delay time can be self set Peripheral Support: Supports 1 group RS232, can connect radio frequencyID card reader, oil level sensor, temperature sensor, etc.Software Upgrade: Supports software upgrade via memory card and U disk Power Protection: Recording content has power off protection function, automatically resumes recording when power is restored Recording: Supports multi channel synchronous playbackSupport fast forward, rewind, 2x, 4x, 8x, 16x speed options Support alarm point search and point in time search Suitable for: School buses, buses, tank trucks, engineering vehicles, large trucks, boats, coaches, yachts, etc.