The ETC ERMC4-G2 Echo Room Controller is designed for lighting control in mid-sized spaces that need reliable relay switching, 0-10 V dimming, and straightforward room integration. It fits projects where standalone operation is important, but future connectivity to stations, sensors, and scheduling devices also matters. Typical applications include classrooms, conference rooms, hospitality spaces, houses of worship, healthcare environments, and retail areas.

This controller supports multi-space deployment with outputs that can be assigned by zone, helping integrators adapt control strategies to the room layout. It also accommodates presentation and automation workflows through contact input behavior, demand response capability, and emergency bypass support for code-driven installations. With flush-mount and surface-mount options available in the series and plenum-rated installation support, it can be placed discreetly while still serving as a central control point.

For Echo systems, the ERMC4-G2 also contributes built-in station power and works with Unison Echo control products, responsive controls, and interfaces. That makes it a practical fit for projects that need scalable wall-station control, sensor-based response, and organized lighting management without moving to a larger control architecture than the space requires.