ETC ERMC4-G2 Echo Room Controller 4-Zone ControlThe 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