The Crestron C3RY-8 is a versatile control card designed for 3-Series® control systems, providing eight isolated relays for controlling lights, motors, screens, and other external devices. Each relay supports low-voltage or high-current switching, giving integrators flexibility for automation and building control. Ideal for custom AV installations, the C3RY-8 mounts easily within Crestron modular enclosures and integrates seamlessly with other expansion cards. Its reliable switching performance and durable design make it an essential component in scalable control infrastructures.