... quality,competitive price T8 fluorescent lamp super narrow magnetic and electric ballast 1.high frequency working status,fast start ... .Low temperature rising, no noise, long life span,and fire resistant;3.Could shut off automatically when the ... is time over,or woring in abnormal status,and it will restart change the tube;4.Valtage: ... -250V; T8 fluorescent lamp super narrow magnetic and electric ballast