@Andrew M.Well, you will definitely have to have all the smoke detectors to be hard-wired (with battery-backup)...and they need to be wired so that if one goes off upstairs, then the others go off as well. 

Instead of spending $50 on a new battery, I went ahead and bought the Dewalt impact/drill combo pack and couldn’t be happier.5) Water heaters can also be saved for a last minute turn on.

Runs on a 18V drill battery and you can knock out a lot of trim on a single charge. 

DJ,In any investment scenario, whether for buy and hold or flip, we always put in a drain tile system with a battery backup.  

Wall Street is compared to Wall Street, RE is compared to RE, Insurance is compared to insurance, CDs to CDs, makes life easier and more valid in reality.Yet, some will continue to run the batteries down in their calculator, projecting their expected wealth.

My computer ran out of battery about a second after I submitted my post last night, so I wasn't able to do anything about the corrupted tables (which shows up fine in the WYSIWYG, @Joshua Dorkin !!)

Every six months, while you're there replacing smoke detector batteries ;c) ...

ie=UTF8&qid=1391440056&sr=8-1&keywords=dummy+camera+security Only downside is having to replace the batteries every 3 weeks.

Sometimes, they are just hard to reach... phone battery died, out-of-town, preoccupied with their own life situations, etc.

Now, I put in the smoke detectors that have the 10 year battery and it simply screws in without being hard wired into the house.