Also be sure to closely examine your projected CAM charges.

Thinking it makes more sense to use a cheap solution that just handles payments, and I can handle the CAM reconciliation at the end of the year.

It's not the lender's cash that is in the house...your's cam out when you refinanced it, and....When you re-use that same cash again, and repeat the refinancing, you are leveraging your cash multiple times.

I used what @Rick Baggenstoss mentioned, a deer cam.  

The tenants pay above base rent with CAM to reimburse.

Just make sure there is enough of a CAM budget to cover all common area expenses.  

If the tenant doesn't have wifi, you'll have to run wires to a DVR if you're using analog cams, or a router/NVR if you're using IP.

Meanwhile, I think a big and easy to address issue is the cam lights.

@Brian Cam - Great idea! 

Also, you can get a wireless motion sensor security cam/monitor with phone app. and that you can actually talk into it.