Sunday I ordered him and yesterday, Tuesday he arrived. So here schonmal the first praise to the seller!
The device is of course a China replica of the Canon original but very high quality. It rattles nothing, the keys can be good press etc.
After 5 minutes read English instructions and a bit of trial and error, I was able to use all functions easy. My 550D communicates well with the timer. Yesterday I a small series of 500 images shot and am very satisfied!
The cable length is enough for me, because I'm going to fix the timer anyway on the stand! I does not have to control from the couch my timelapse pictures;)
All in all, highly recommended! Price and performance go hand in hand and I am very satisfied!
ADDENDUM: I have read that many are dissatisfied due to lack of ON / OFF switch. This has irritated me at first a little, but you can easily take out the battery children about the benefits. Man must not unscrew, but that the battery compartment can be easily opened with a sharp object! I use it a mechanical pencil!