Philips is setting new standards in compact, lightweight and intelligent dimmable high frequency electronic ballasts. HF Regulator Intelligent TD allows the exchange of MASTER TL5 HE and HO lamps of the same length, offering maximum flexibility in luminaire design and use. Thanks to intelligent power saving functions and dimmability, this ballast meets the highest requirements for system efficiency in combination with MASTER TL5 (HO and HE), TL5c, TL-D, PL-L and PL-T/C.