MIWA PR.LA-B5, Unlocking the entrance door with vertical position security thumbturn

"Lost key, Unlocking the entrance door"

It was Lost key, Unlocking the entrance door. Since the request was for a crime prevention thumbturn, we will proceed with the work using a tool with a camera.

Surprisingly the thumbturn was locked in the vertical position. I checked it multiple times and it was still in the vertical position.

Perhaps someone installed it intentionally, but the selection of the tip jig and the approach method need to be slightly changed.

I proceeded with the work while imagining the work process in my head, whether to approach it from above or from below. In the end, I was able to unlock it by approaching from above.

At the request of the client, we left the installation direction of the thumbturn as is.