currently needing to upgrade a new property of mine and am stuck trying to figure out which would be my best option to go with: Combination CO2 & Smoke alarms that are 10yr sealed or just plain jane battery operated.

I tell them to change the batteries when i send them the lease renewal or else theyll get locked out. seems to work well so far.

Could be as small as a dead battery in a smoke detector in the middle of the night (no guest wants to hear beeping while they are trying to sleep), guests can get rowdy and disturb neighbors, I have even had guests that insisted upon having someone meet them face to face when they arrive.

fresh batteries in all.  

I don’t believe the digital wall mounted controller is operated by batteries.

Totally Off grid with micro hydro,48v dc to Pure sine wave inverter(5500 watts) New Trojan Batteries (Renewable energy) Have two springs one is for drinking water and other is for water turbine.(90 gallons per minute and 175 foot of head/drop in elevation) still a project in progress as we have plans to convert into a functional micro farm with greenhouses etc producing all natural Non GMO vegetables that are ORGANIC.

Totally Off grid with micro hydro,48v dc to Pure sine wave inverter(5500 watts) New Trojan Batteries (Renewable energy) Have two springs one for drinking water and other is for water turbine.(90 gallons per minute and 175 foot of head/drop in elevation) still in progress as we have plans to convert into a functional micro farm with greenhouses all natural Non GMO vegetables that are ORGANIC.Breaking ground on year round heated greenhouse this summer.2019 What made you interested in investing in this type of deal?

They have been convinced  by incompetent landlords that turn over is very expensive, so expensive that they live with bad tenants and charge rent below market hoping not to face a turn over.

Only do 1 yr leases... actually, I prefer M2M, but I understand we're in a different market.I say, do a small upgrade (ie: new light fixture, or change electrical outlets to have the chargers included), and then raise the rate something  reasonable, $50 this year, and do the same next year, and the year after that. 

They agreeing to findings.2. complete repairs found by inspection and deduct from deposit3. clean carpet if they don't provide a receipt from a local, professional cleaner which is the condition they received it in. deduct from deposit if they didn't.4. if a pet was allowed, they must turn in a receipt showing it was treated for fleas. if If they dont it comes out of the deposit. if any damage from pet they're given an estimate of repair and sign an agreement that they will pay any excess not covered by deposit.5. touch up painting as needed, filters changed, fire alarm batteries updated.6. get keys from tenant and change locks. old locks go into inventory to be used in other properties.7. return their deposit with a letter documenting what expenses were paid out of it and a notice that they are welcome to return if they were a good tenant. they can use the statement for their future landlord as well. if they were not a good tenant, they go on a do not rent list for future reference with a copy of mive.iut inspection signed by them indicating damages and/or non-compliance behavior.