These LED tubes have a full replacement for fluorescent tubes. But that absolutely makes these LED tubes is not mentioned in the description. The tubes have a large viewing angle of 270 ° and can be turned at any angle, as amended. This makes these LED tubes can also be used on the wall at eye level and rotated so that no glare effect. In addition, the lights need only one side current, which greatly simplifies the conversion of lamps. Who does not want to do the conversion, only the accompanying exchange-starters need to use. The must also be sure, because otherwise the light flashes and goes through the high induction voltage quickly kaput. If you want to have something a little more light output with less power consumption, which should use the tube in a special LED lamp, or disconnecting the control gear completely and place both wires (phase and neutral) on the lamp holder without the starter. Then it takes no more even sharing starters and no longer hears the smallest humming noise. Super thing, hopefully agrees the specified operating time. The replacement starter will be, which is not the case with any manufacturer.