I guess this would make most sense for flippers, but how much (if at all) does adding smart home devices improve property value?

Tenant acknowledges that Landlord, or his agent, upon commencement of tenancy at the above described premises, has installed or caused to be installed __________operational smoke detection/alarm device(s), __________operational carbon monoxide detection/alarm device(s), __________operational combination smoke/CO detection/alarm devices and has shown Tenant their operation.

Do any of you have thoughts or experience with smart devices in rentals?

Each unit gets their own meter, the service cable to the utility is beefed up for modern device extra power draw, each unit has their own circuit breakers.

I have suggested possible solutions, including a device of european manufacture that reduces wall humidity, but it costs around $10K.

Google Sheets is free and you can access it at any time from any computer or mobile device, so you don't have to remember to carry a notebook with you.If you have multiple rentals, track each one on a separate tab:1.

Being in tech, I would definitely recommend slack for this, as its for pc, macs, and mobile devices, and I use it everyday for work.

I currently work full time in the medical device industry but looking forward to my next phase. 

You can stream them through your internet browser or download them to you device.

CAP rate is a bench mark for judging dissimilar properties, and for telling you how well its performing based on the cost of the property.