Unlocking by indoor confinement, lack of security thumbturn for TOSTEM QDC-19

"I can't open the front door from inside, I'm trapped."

A young woman was trapped inside.The client on the phone was a man who lived in this room.She said she had already left for work and could not return home.

Arriving on site is TOSTEM's push-pull grip handle lock.There is no post or door scope on the entrance door.

(Now how do we check inside?)

Hearing through the door.Both the top and bottom are locked, but it seems that only the bottom cannot be unlocked with thumbturn.When asked further, it says that there is no knob.

(Maybe I should look for the window)

I look for the window to get the key, but it seems to be in the back.However, it seems that there is no choice but to pass through a fairly narrow gap and receive the key.

The key is iNAHO TIERKEY made by FUKI.Unusual, isn't it?Durability cannot be expected because the rigidity of the key is small, but it is probably the result of the owner's emphasis on cost.

When I unlocked it with the key, the thumbturn was definitely off.It was a security thumbturn with a key.

In other words, when you go out, you can lock both the top and bottom from the outside, but only the top with the thumbturn can be unlocked from the inside.It was an operation mistake by a man who locked the top and bottom and went out even though there were people inside.

The applicable security thumbturn is for TOSTEM QDC-19from hereAvailable.