The con to this system is that the wireless sensors run on battery but you dont have to tear up a whole house to run tstat wires. 

I can see the advantage of sheer cutting tool with the multiple angles, I think I will add these to my tool bag. https://www.idealtruevalue.com...I also recently bought the below wet/dry vacuum, the tool has the capability to be 120V or be battery powered if power isn't available.

Of course, there are other openers for sale — electric countertop versions, battery-operated ones that can fit into a drawer — but as reviews show, they all come with their own set of drawbacks: dropping cans onto the counter, using more battery power than expected, just not working, and impossible to fix yourself.

Probably not battery operated but hard wired.

Electronic Lifts- disconnect the battery if leavingfor long term storage.K.

Try to get a maintenance report as you would do for your HVAC system.Does the system have Batteries?

This is what I do   So far so good Battery operated Fake security cameras,  With blinking red light  1 on each corner.  

They are battery operated, you may have seen them in restrooms. 

But he did leave a LOT of neat gardening tools, a battery charger, gas lawn mower, outdoor patio furniture, 5yr old propane BBQ so our new tenants were real happy.

It looks like a "ring base station" is required to make these work, not sure if there is a work around, and also wondering if you'd need your own dedicated wifi in the house to connect all this too Owning a few properties myself and as a property manager for other investors I am imagining now the calls I would be getting when this system isn't working properly, batteries die, motorized lock stops working etc, so living in new england with the elements and temperatures we experience I would not recommend this to the owners of the properties I manage I have an up down style 2 family with a common entry door that sounds very similar to your setup.