I have to say the exterior night vision ones give alot of false alarms.

This was alarming.

I've been approached by at least 2 parties from BP who were questionable, and at least two posts on this thread set off alarm bells  (too good to be true, and anything with the word "trust").

Not sure about the smoke alarm.

People had them behind picture frames on the walls above beds, in alarm clocks next to beds, in the mattresses, and bed frames, he took off outlet covers so he could treat those areas, and down in the baseboard trim we took off that, to get behind.. we finally took up the carpet & pad, they were embedded in the wood carpet tack strips, we took that up .. so the bad unit was treated, and re treated,  and we didn't rerent that for 2 months.

[AKA - "STOP: My neighbor does not have alarm/Surveillance systems -You'll have better luck there" (Kidding!...

They can get in just about anything alarm clocks, behind pictures on the wall or bedside tables, and of course bedding, furniture anything stuffed. and stuffed animals.. 

Provide proper notice according to the lease and perform a quarterly fire/safety inspection that includes smoke/CO2 alarms, furnace filters, cracked windows, missing screens, broken locks or electrical or plumbing fixtures, holes in drywall, water/smoke stains on ceiling, missing wood trim or handrails, loose flooring/carpeting, general cleanliness etc.

Great question Scott.I have a BA in Psychology, and right out of college went into a full time position working with an alarm company.

Another good excuse is to check on the fire alarms.