"Jim K" wrote:

well you mean it's reliable...

"entirely safe" seems unproven?

I know what you mean, but I hold to what I said: in the months it's been
installed the mechanism has worked flawlessly, its position has proved
convenient for those who know it's there and not tempting for anyone who
doesn't: there have been no attempts to break into it. I regard that as
being entirely safe.

I can't of course, comment on how it would hold up to a prolonged or
particularly violent attack, but then exactly the same could be said of the
front door to the property.

Bert