ETC’s Unison Echo™ Room Controller provides a complete power solution for small- and medium-sized rooms – all from a single, compact product. Its feedthrough power input allows four or eight relay outputs with 0-10V control powered from one or multiple 20-amp power inputs. With additional interfaces for A/V integration, Demand Response, and UL924 emergency built into each controller, the Echo Room Controller is ideal for classrooms, offices, houses of worship and all general area-lighting needs.