My landlord has just told me he comes to check my apartment when I'm not here. He says he wont come again, but I'd like to makes sure about this. I don't know how to change the code of my alarm and the problem is that there is no model on the box. I have tried looking at the box with the display and at the bigger box with the connections but there is no letters or label.
Can anyone help me please?

John, February 2007

I have just found the model!!! I´ve patiently looked at manuals to see which one gives the same options as mine does.
Apparently is a Gardtec model, so if someone asks or has the same problem now you know

John, February 2007