My copy had deviated from the product picture a black Insulating Ummantlung and a CE mark - but without certificate. In addition, F-double socket was provided, which was not in any description and was also displayed anywhere. Very thoughtful of "Let's sell", but what I do with it?
If you hold the part in your hand, it makes a solid impression. It is to switch at 68 V - the description says unfortunately nothing out. The feature I could not test, I simply built into the system for lack of flash (in the countryside).
The installation is very easy because of the surge protection is designed with plug and socket. You can just buy a screw and "pinched" the part between. That's it.
Because the part is without any specification and I think only partly to the benefit of the part, I can only awarded 3 stars - maybe I'm wrong. In any case, the part is affordable, easily installed and gives the feeling of having done everything for the satellite system.