(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.

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.

Although I don't know if what you have now is just battery operated or hard wired, that makes a difference.  

batteries?

I live out of state of where my STR will be in, and I'm installing keypad entry for the door but those things run on batteries so I wouldn't be able to go there and change them so it would be good to have an on-call handyman that would be able to do this.

If you have time, hit those sump pumps, batteries, leaning trees, drains and gutters. 

Check out the California Penal Code and look at the defenses to homicide (and also battery and similar crimes, if you want to shoot someone in a non-fatal manner).If found this on the internet - no idea if it is correct or up to date, so please don't rely on it if you decide to shoot someone:http://law.justia.com/codes/california/2009/pen/187-199.htmlHomicide is also justifiable when committed by any person inany of the following cases: 1.