... , EMC, SAA, C-TICK , ROHS, TUV , ETL ,VDE and ISO9001 5) With intelligent warm start, which gives 2 times longer lifetime ... 49w lamp tube , gives 36.7 watt to a 35w lamp tube , give 27.5 watt to a 28w lamp tube , give 22 ... stroboscopic flickering, which usually causes headache and irritated eyes. T8 to T5 adapter energy saving light fit every kind of T8 tube