The Crestron DMC-4K-C HDBaseT 4K DigitalMedia 8G+ Input Card is a versatile accessory designed for use with DM switchers. This input card, manufactured by Crestron, provides connectivity via RJ-45 and offers multiple audio/video outputs including Stereo Audio L/R RCA and HDMI. With support for the HDBaseT smart home protocol, this unit allows for seamless integration into your surveillance and smart home electronics setup. Ideal for consumers looking to enhance their entertainment and control systems with high-quality audio and video outputs.