The Limelight by Lutron RSM (LL-EXTMOUNT) consists of a radio frequency (RF) control device with integral motion and daylight sensors. It is installed into an appropriately sized fixture wall opening, leaving the RSM external while controlling 0–10 V electronic LED drivers in the fixture. A Limelight gateway is required to enable wireless fixture controls and sensor functions. A Limelight gateway connects fixture controls and sensors into a high performance wireless system.