LED Smart manufactures direct fluorescent replacement lamps for residential, commercial and industrial applications. Our light tubes are compatible with virtually every standard, ballast equipped fluorescent light fixture, without any need for modification. This product works as a high voltage replacement (90V – 277V) or low voltage (90V - 277V) equivalent with an external power supply that replaces any existing ballast. LED Smart light tubes come in 4 white light temperatures including warm (2800K), neutral (3500K or 4100K) and cool (5000K) and offer a 3 year limited warranty.