🚚 Shipping: $5.00 (weight-based flat rate; a whole order never ships for more than $35).
Ships from Mesa, AZ within 1 business day · estimated delivery 3–7 business days (continental US).
↺ Returns: Seller Pays Return within 30 days.
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Fydun 4 Channel Car Backup Camera Video Splitter - Quad Control Box, Model ST503H
Connect up to four backup, side or cargo cameras to a single monitor and switch between them, or view all four at once in quad split screen. Built for RVs, trucks, buses, trailers, school buses and boats running 12V or 24V electrical systems. The product label on this unit reads: Product Name 4CH Car Rear View System, Model No. ST503H, Power DC12V/24V, System PAL/NTSC.
Inputs, Outputs and Power
Camera inputs: 4 screw-lock aviation-style sockets on the box, marked CAMERA 1, 2, 3 and 4. Each carries video plus audio and camera power on one cable.
Monitor output: 1 screw-lock aviation-style socket marked MONITOR (position 5). One video output feeds a single monitor.
Audio: 4 channels of audio input and 1 audio output.
Trigger inputs: a CAM TRIGGER connector with 4 trigger wires (1, 2, 3, 4) for reverse, left turn and right turn signals, so the box can jump to full screen automatically.
Power: DC 12V or 24V wide-voltage input on the marked POWER (+ / -) terminal. There is no AC adapter and no internal battery - it wires to the vehicle supply.
Video format switches: a DIP switch block sets MIR/NOR (mirror or normal image) per channel 1-4, and position 5 selects CVBS or AHD signal output. PAL / NTSC system.
Overload, short circuit and reverse-connection protection.
Key Features
4 camera inputs to 1 monitor output - single camera view or 4 way quad split screen
1080P video support (AHD mode)
Automatic full screen switching on left turn, right turn or reverse
On screen information overlay for license plate number, time and driving information
Host can be turned on, off or set to delayed shut off
Screw lock connectors hold up on rough roads; flanged metal case for bolt-down mounting
Versatile compatibility: school buses, trucks, large trucks, RVs, trailers, boats and more
What Is Included
Quad Control Box video splitter unit (ST503H)
Wired control keypad with attached cable - CAM1, CAM2, CAM3, CAM4, QUAD and POWER buttons
Power and trigger wiring harness
Instruction sheet
Cameras, camera cables and the monitor are not included. Please review all photos for the exact contents and condition of this unit.
Condition
Open Box. Typically includes all original factory packaging. Ships fast with tracking.
Ships fast with tracking from Mesa, Arizona. 30-day returns - seller pays return shipping.
