Could be a supply line, a drain line, or perhaps a wax ring on the toilet. 

Nest Thermostat, Ring Doorbell, Nest HD Outdoor CamApprox. $30,000 in upgrades all completed in 8 months.FinancialsHere we go...we financed the property with 5% down FHA and paid approx. $10k towards upgrades with another $10k financed through a non-profit and got the solar system for free as part of a grant program.Current Rent: $1,900 per month - Cash Flow $500 per monthHome value: $275,000 ($82k in equity).ROUND #2!

Until he had a deal go bad and an investor decided to ring the SEC.

The ones who read this website compulsively, the ones who have logged on once or twice, and the ones who have heard of it but never bothered to take a look.Quite simply the Bigger Pockets people are running rings around the other two types of investors in my area.

I've looked into traditional systems like ADT and also into the Ring doorbell product.

@Brian Dailey definitely call your own google number and check on it, there is a default setting that requires the person to say who they are prior to the phone ringing.

Originally posted by @Alan Pederson:We just got back from a week long tripWhile there I was getting call after call about the house we have for rent...My phone used to ring an avg 0f 62 times per vacancy.

If you go into a soundbooth for a hearing test and hear some ringing in the quiet you have tinnitus. 

I finally convinced myself to throw my hat in the ring. 

@Richard Ring Thanks Richard looks like I was over thinking this