SIEMENS FC901 - Inherited panel, but need help in swaping out smokes

Fire Alarm Help
1

We inherited a SIEMENS FC901 in our new building, and we’re trying to swap 4 defective OP901 smoke detectors out, but do not know all of the nuances of the panel or the default technician password :sob:

I would be grateful for some help if anyone else interested. We intend to put a telguard cellular unit on it as well.

Can all of the above be done easily from the keypad, or will we need the desktop software?

Most sincerely,
Chris

2

I think you will need the software seeing as it is a Siemens panel (I might be wrong)