Alarm Supplies Where Is Home Alarm Power Supply (transformer) Located?

Where is home alarm power supply (transformer) located? - alarm supplies

He bought a house with an alarm system. It has no power because it is not connected to power source. A / C (power) cable runs from the panel on the wall with a group of other cables, which are identical, so that the PSU has to go somewhere in the house, but when is a good place to get out? Ive in the attic, but as all the cables are the same, except I do not follow every single thread.