YKKap aluminum sash maker suspends unlocking work with unexpected crime prevention thumbturn

"Unlocking the entrance door request due to non-carrying key"

It was an unlocking the entrance door request due to non-carrying the key.It is a request after the rainy sunset.It is the usual detached rental property.

What appeared in front of me seemed to be YKKap's heat-insulated door exceeding DT40.In the declaration, it is usually a thumbturn, so after approving the estimate, I went straight to work.

The smoke guard for the heat-insulated door is quite large, so I decided to make a new jig on the spot.I checked the position of the door packing and started work.

However, after all, the work was stopped for 20 minutes x 2 sets, and since unlocking was not permitted, I left the site.

While struggling with the door packing, I remade the jig twice and tried it, but somehow it feels different from the usual large thumbturn. (Is it not caught? But it can't be pulled out?)

When I was about to break my heart, when I listened in detail again, it looks like a bowl-shaped thumbturn that is difficult to turn.

(What kind of security thumbturn can be retrofitted to aluminum sash manufacturer doors? I can't think of anything.)

(aiai eggSeems to be different. Because it cannot be attached to YKK ap. )