The Crestron PRO4 4-Series Control System Processor 6512050 is a wired unit designed for Crestron compatibility. This processor is specifically for Crestron products and is manufactured in China. It does not have a manufacturer warranty and is a single unit. It supports a 1:1 connection split/duplication and is part of the Crestron smart home protocol, making it ideal for surveillance and smart home electronics.