u/AshamedElevator3439

Hi, the obsolete access controller in our old office just stopped working properly.

It is deemed for replacement.

The problem is the security key is nowhere to be found. This was installed 2 decades ago and the employees who are knowledgeable about this device has already left.

Now, do you know a way to properly open this device. We don’t want to scratch the dry wall.

There is no installation manual to be found even online.

Thanks