Photograph anything with a model number, a wiring terminal, or a label. A photo you do not need costs nothing; a second trip costs an afternoon. Prioritise the four critical groups first — garage opener, alarm panel, electrical panel, and the pool pad — because each one is blocking a decision that cannot be made any other way.
1
Garage door opener
Look up at the motor unit — the label is usually on the side or back
Blocking
2
Legacy alarm panel
Utility closet, garage wall, or a hall closet — a beige metal box
Blocking
3
Electrical panel
Garage, utility room, or an exterior wall
Blocking
4
Existing wiring & pathways
Structured wiring panel, attic, closets
Important
5
Pool equipment pad
Usually a slab beside the house or behind a fence
Important
6
HVAC & thermostat
Hallway walls, attic, closet, exterior condenser units