So we purchased Arlo cameras to keep tabs on the property, and got electronic locks for the back door for remote access for contractors, and had ADT install an alarm system with remote access. 

., sets off alarms all oer the place. 

Think things like fire standpipes, fire alarms, exit signs, fire extinguishers, heating, most churches have kitchens that need to meet health DPT inspections, range hoods and exhuasts.

My McDonald's inflation gauge is still showing an alarming trend.

That causes a lot of alarm in my opinion.

For our properties we first turn on utilities in our name so that the lights are on for showing the property, and so that we can have the alarm system on (we use SimpliSafe).

Carbon monoxide alarms are missing.

Something I would add to all exterior doors would be an alarm that goes off when the door is opened.

Did the thief use the old key to gain access?  

No need to alarm him.