Surprisingly, they show a delay of approximately 1/10 of a second compared to incandescent lamps, then light but completely flicker and hum.
My version of a transparent cover allows the view of the chain of LEDs that light up against a blinding light! This is intolerable for all applications where you could look directly into the LED light. If - like me - a diffuser before the LED light, the light distribution and luminance is good. Otherwise, the frosted glass version of the LED tube choose (which seems at present not to give it to 60cm).
During installation it is important to note a few things: The old fluorescent lights could use it by turning the glass tube, and thus the contacts in the holder moved since the end caps were fixed to the glass. The LED tubes, the end caps can be rotated against the glass in order to adjust the lighting direction of the LEDs can. Unfortunately, this can cause it then turns over the tube, but not the end caps, and thus you can not make contact in the holder. I had to take a pipe wrench to turn the end cap in the right position.
A ballast ("throttle") in the circuit of old pipes I have not found (and therefore no extended). They may exist in the depths of the lamp housing. In the case it does not interfere in any case the LED tube.
The "starter" are included. These are nothing more than wire bridges between the two contacts without additional function. These must be necessarily replaced with the old, real starter.
A communication problem there was with the company: with two tubes No starter seemed beizuliegen. A request from the company was indeed answered promptly, but in a completely unintelligible German. The company then sent two new starters. Finally, I have noticed that the starter although side dishes, but so wedged in the tube that they neither hersusfielen still rattled. Only opening the cardboard tubes in which the LED tubes were sent to the "wrong" side lies the starter recognize :-)
The shipping container was actually exemplary.
Let's see how good the durability.
