Signify Lighting, Ballast, AmbiStar, Residential, eFluo Fix, Min Start Temp -18C, Amps 1.57A, Average Life 43800HRS, Volts 120V, Watts 32W, Non Dimmable, Number of Lamps 4, Ballasts Factor 0.81PCT, Input Frequency 50/60HZ, Programmed Start No, Certifications are ULISOFCCCSA, RoHS