The Soundweb Contrio EC-4B is an Ethernet wall controller for use in Harman HiQnet systems. The EC-4B can control and monitor parameters within BSS Audio Soundweb London and other HiQnet devices, including Crown DCi series amplifiers. The EC-4B is available in black or white, and in single-gang US Decora or single-gang EU form factor. The EC-4B contains a single Ethernet port for configuration, control, monitoring, and power via PoE. The EC-4B is configured via simple drag-and-drop operations within the software application HiQnet Audio Architect.