The castle begins by a siginificant and discourages certainly some opportunist thieves from. However, it appears to the right (handy) tool to give in fact a small Haushaltssäge quickly at the weakest point (first link)! See comment from Potter.
Positives:
I can not confirm that the numerical code simply "scan" or "listen" can. We just tried Couple, find out an unknown combination. It does not work.
Negatives:
- Adjacent to the number wheels chain links are thinner than the remaining and easily saw through
- Last Bordering the number wheels plastic part is broken apart. This is evidence not just of quality
Conclusion: the safety of the castle is for the price of about 30 euros to dürfig and I change my vote, therefore, from 4 to 2 stars.