1、2:1（Scan line fineness ratio），4:3（Scan line thickness ratio） 2、LED:（Scanner line generator-Working indicator light） 3、Output to HDMI display device: LCD or LCD TV, Support audio and video synchronous output. 4、Arcade game video image produces the scan line effect, classic, nostalgia, Perfect recall of CRT.15KHZ video image display effect, Re-experience arcade game classic picture, Feel again the wonderful image of the scan line. 5、With this scan line generator, you will have better experience in your game. Features: 1. 2:1（Scan line fineness ratio）, 4:3（Scan line thickness ratio） 2. LED:（Scanner line generator-Working indicator light） 3. Output to HDMI display device: LCD or LCD TV, Support audio and video synchronous output. 4. Arcade game video image produces the scan line effect, classic, nostalgia, Perfect recall of CRT.15KHZ video image display effect, Re-experience arcade game classic picture, Feel again the wonderful image of the scan line. 5. With this scan line generator, you will have better experience in your game. Specification: Condition: 100% Brand New Item Type: Scan Line Generator Material: ABS Color: Black Package List: 1 x Scan Line Generator Description of vertical signals: 1. If the scan line switch is ON, The scan line has no effect（image darker）, This is vertical signal is out of sync. 2. If you need scan line effect, Toggle (VSYNC) to switch sync, resulting in effect. 3. If you don't need the scan line effect, switch is set to OFF, Image restoration to normal HDMI state.（Darken image will restore brightness.