I highly recommend that with your net worth, which is continuing to grow with these properties (while also expanding your liability - Carbon Monoxide kills one person because your C02 detector didn't have battery back up or had died, and you lose everything).  

For this reason, if a tenant calls due to a malfunction of the smoke detectors and a technician is dispatched, you can have the following outcomes:Technician determines the smoke detectors were faulty, and replaces - owner chargeTechnician determined the smoke detectors batteries needed replacing - tenant chargeIf written into the lease that the tenant is responsible for such replacement and the detector was easily reachable, - if not or if the tenant is elderly or disabled, assume reasonable accommodation: owner charge=time/labor & tenant charge=battery costWhere the property manager must be mindful is in the allocation of the owner's resources (money).

add battery operators cams like they use for deer hunting around the property there camo so hard to find them u can mount to trees or any where some are rechargeable from sun solar 

You need to change the batteries every year.You might also look into LandlordLock.com.

I am currently in a live-in renovation on a duplex in Battery Park that will be a rental when complete.

Batteries.

But when the “inspect” they are really also replacing the air filters, smoke alarm batteries, etc.

She had already checked the circuit breaker, changed the filters and changed the battery in the thermostat.

My own mower cost $400 and its battery-powered (not the best).Please help me think this through: for those of you with section 8 properties that are susceptible to tall grass violations, how do you handle this?

It's easy to install, the batteries are easy to change out every year, and Am.