VGA Signal Generator - Screen Color Tester

VGA Signal Generator - Screen Color Tester. Screen tester with vga output powered by 9V battery or 5V USB It is a device. You can use it on televisions, monitors or screens with VGA output. It prevents dead pixels etc. on the screen. It is a product with which you can detect malfunctions. It is easy to use, after making the connections, you can test your screen with different color tests using the + - buttons on it.