BSS EC-4B Ethernet Controller with 4 ButtonsThe 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. It is a single gang US Decora form factor available in black or white. The EC 4B contains four buttons and one LCD screen. The buttons and LCD screen are multi color backlit, capable of eight different colors with