Fillet lamp: Suits for interior lighting in Buses, Streetcar or Tram, Trolleybus, Airplane, Ship and for lighting in public ... preheat enable 100,000 times of switching service for one tube3.20,000 hrs of serve with ... protective circuits for over-voltage, under-voltage, short-circuit and ... mount or dismount.7.All fluorescent lamps suit for SMEST DC/AC ballasts.8.All Model No.: ...