LuxSense is a DayLight Regulation option (DLR) for luminaires equipped with a Philips HFR ballast. The sensor measures the reflected light coming from the surface below. It dims down the lamp output when the light level exceeds the required light level defined by the light sensor set point. LuxSense can be installed in the luminaire by attaching it to the lamp with a lamp clip. LuxSense is available as a complete set with a sensor and a lamp clip: LRL1220 TL-D for TLD lamps and LRL1220 TL5 for T5 lamps.