Korean-made GuarDoor SHS-1221 Unlocking electronic lock

"Unlocking the entrance door of an electronic lock without a door scope or door post"

While moving, I searched the property name for more information and found that the electronic lock was a lock lock, "GuarDoor" SHS-1221 made by Samsung Electronics OEM in South Korea.

We don't usually get this much information.I was able to grasp the position of the thumbturn and OPEN button on the indoor side, and the position of the emergency power terminal.

Since there is no door scope, the basic response is cylinder breaking and unlocking, but after that, the response will differ depending on whether it is a power supply problem or not.

The client also had a physical key, but it's useless for emergencies.I usually press the start button, and I hear a beep and press the numeric keypad.Tell me that it won't go on anyway.

I can't find a physical unlocking method.I decided to connect the emergency power supply somehow as a power supply trouble.

As an emergency power supply, there is a 9V battery, but the cylinder interferes and the connection approach is not possible. (It's a complete installation failure by a novice worker who didn't consider safety and maintainability.)

I will go to a home center soon, get a connection extension cord in a hurry and process it.As a result, it became possible to connect, and it was unlocked with the PIN.

I'm sorry to have kept you waiting in the hot weather.At the time of recurrence, the reaction is suspicious, so I told him that the main body control board needs to be replaced and it is completed.

However, if the power supply does not open the door, there is no choice but to physically unlock it.It's a pretty messy electronic lock.

Remember "Gardoa".