The b a g bcs352fx 01220 240 is a high frequency ballast to run 2 x 14w 21w 28w or 35w t5 fluorsescent tubes they have an average life of up to 100 000 hours they have an energy efficiency class of eei a2 the bcs352fx 01220 240 offer flicker free light and have reliable lamp start even at temperatures as low as 20deg c they are suitable for use in emergency installations and have automatic restart after lamp replacement