The Crestron CLS-C6MRFW is a modular DIN-rail mountable lighting controller designed for integration into Crestron automation systems to manage standard line-voltage fluorescent and incandescent lighting loads. It provides six independent relay channels, each capable of switching the mains power supply (120VAC or 230VAC) to lighting circuits. This allows for automated on/off control of lights in response to schedules, occupancy sensors, daylight harvesting, or user commands from Crestron touch panels and keypads. The controller is typically installed within an electrical enclosure alongside other DIN-rail components like circuit breakers and the main Crestron processor, providing a neat, centralized, and safe solution for lighting automation in commercial and residential projects such as offices, classrooms, conference rooms, and smart homes.

The module is engineered for safety and reliability, with each relay channel rated for specific amperage to handle typical lighting loads. It communicates with the main Crestron control processor via the Cresnet network, a proprietary bus that carries both power and data over a single cable, simplifying installation and reducing wiring complexity. Configuration and control logic are programmed using Crestron's Simpl Windows software, where each relay can be individually addressed and its operation defined within the larger automation program. This enables sophisticated lighting scenes, timed events, and energy-saving strategies like automatically turning off lights in unoccupied rooms.

As a component within the Crestron Connected lighting control portfolio, the CLS-C6MRFW offers a straightforward, hardware-based switching solution for applications where dimming is not required. Its modular DIN-rail form factor makes it easy to scale and service, while its integration with the Crestron ecosystem allows for unified control of lighting alongside AV, shading, climate, and security systems from a single user interface. This provides a cohesive, energy-efficient, and user-friendly environment.