This is a 4 in 1 high definition video signal convertor, it convert AHD/TVI/CVI/CVBS signal to /VGA/CVBS signal. The convertor recognize input video signal automatically. it compatible with 1080P,960P,720P,480P signal input. The output signal support 1080P and 720P. You can shift it by the button on convertor. wide power 5V-20V design helps it widely used in different working conditions. How to use:1. Connect with your 12V power adapter to DC port, after power on, the RED light on; 2. V-IN connect with video signal input, the other side connect with the device which to receive converted video signal; 3. If you connect V-OUT/VGA/ at the same time, button A to shift different signal to display. The default output signal type is . 4. When using output, button B to shift Video resolution between 1080P or 720P. 5. When using CVBS output, Button B to shift PAL/NTSC mode. Colour:As Shown Material:PC Package Contents: 1 x AHD Video Signal Board (Due to different product batches, the appearance but not affect the use) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.