They are usually responsible for anything consumable like light bulbs, smoke detector batteries, filters, etc.

How long do the batteries last in a harsh climate? 

It turns out the camera was not functional...just one of those that look real with the battery powered led light.

(ending the need to take them down).Also they expire in 10 years (there should be a date label on them), and if you want, you can get 10 year no battery replacement models.Good Luck!

I would pay the PM a quarterly fee to do this  @James Wise   We offer a unit inspection with a change of the batteries, filters etc to investors as many or as few times as they would like.

Replace batteries in smoke alarm.

For accounting/ book keeping, check out quicken home & business desktop software, which has a rental module to allow you to download all transactions from your bank/ credit cards, then tag transactions by property and categorize them by IRS expense category.

Also has good financial statement module that a lot of other/cheaper options don't seem to have.

There may be a battery backup so it could make noise even after you disconnect the power (but 15 years is pretty old for it to still work).

Z Wave uses much less energy for the wireless signal so the batteries in the lock last much longer.