We have ADT.
We do not have the ADT signs in the front yard------or the back yard---nor either side yards.
We do have ADT remotes, enabling us to arm/disarm the system from outside. It also has a Panic Alarm button.
The bad news is my remote got into the washing machine, got wet, and sent out the panic alarm.
The good news is we had 3 Sheriff's cars in front of the house four minutes later----with 3 Deputies on the porch---each with a shotgun---at the ready!!
They explained all this thus: "We don't mess around when a panic alarm comes in."
We sleep well.
We did have some bad news once upon a time---a burglary (pre ADT).
Only 3 guns were taken---an old Remington auto loading 20 gauge which resides at the back door (and was recovered)---an Ithaca Stakeout 20 gauge shotgun (with a 13" barrel) which was recovered (thanks to the fellow who bought it (for $100), and who knew it was trouble if he were to get caught with it, and so took it to the Sheriff's office, and ratted out the burglar)-------- and a Model 66 which resided in a bedside table (and was not recovered). All the guns in my collection were out of the display case (for a semi-annual vacuuming), and laid out on the living room floor (covered with garbage bags)---and weren't touched.
The very best news is we went to all of the burglar's parole hearings (5)---and his parole was denied 5 times.
And then the word got out that we were mean.
The moral of this story is your guns are most protected when they're laid out on your living room floor, and covered with garbage bags.
Ralph Tremaine