The LUM-MAG-B1-OS-G-4K is a part of the Leddex lighting control system. It is an open source AC dimmer module that is designed for mounting in any standard electrical junction box. It supports multiple dimming curves, five dimming speed profiles, and four dimming modes, as well as four memory settings. It also supports a fourth generation dimming interface with four channels that can be individually controlled. The fourth generation dimming interface (4K) allows for precise and reliable control of light levels. The LUM-MAG-B1-OS-G-4K is perfect for any user needing precise control over their lighting system.