The NX-4200 NetLinx NX integrated controller is a programmable network appliance specifically designed to control AV and building technology using multiple analog and digital formats. The NX-4200 provides a scalable platform for the future by combining high performance, backward compatibility and extensive network security features. With its front panel display, built-in Ethernet switch and PoE capability, the NX-4200 is the ideal solution for demanding, technology-rich environments.