Ya be careful with innovation as well.Toyota now developing battery a battery that can last 1,000 miles.When it's commercialized Tesla is wiped out if they can't enhance their product.And the job loss would be significant enough LOL

Batteries could go dead but if you are responsible you won't have an issue.

And, for batteries there is how much really nasty stuff in those?

I can have 19 codes, unlock or lock the door remotely, change codes remotely,  see the battery life, and get an email or text when the door is used.

Same goes for things like batteries in smoke detectors. 

Renting out per bedroom instead of per unit can give 2-4 times more rental income.Partnering can be good getting into deals more smoothly however a partnership can go sour.Build your team of advisers who you can turn to with questions.Get the best management company to work with go to IREM.org search for ARM certified managers they passed a battery of tests.REIA clubs networking and meetup groups can be a great source of people, info and resources.

They are suing for lose toilet, no screen on a window, non-working outlet in bathroom, pests, hall light not working (light bulb needed to be replaced) and non-functioning smoke alarm (they never replaced the batteries).

I want to be prepared for the O&U inspection, but I can not find this code listed anywhere, and when I call the Government I get different answers depending on who I talk to, such as: 1) Need hardwired interconnected system, but the detectors in the units can be battery operated. 2) Need hardwired detectors in each bedroom and common areas, but they do not need to be interconnected.

But as soon as they checked in, the fire alarm was beeping/out of batteries (even though she had just changed it!)

Recently I had the following work done at a property:  1) install security screws for existing kitchen faucet 2) adjust deadbolt on a door 3) replace (2) outdoor lights and light bulb (4) replace 3 smoke detector batteries (5) install a spring for screen door (6) install a blind in the living room.