LTR - single family security system expense

[Tamara Kilgore]

Presently, my properties ADT security system is in my name and I'm paying the monthly fee from collected rents. When I moved out of the property, I kept the system in my name during the vacancy period. It's now been 5 years and I'm wondering if their is an alternative.  I still want to protect my property and thereby my tenants, I also want to reduce or eliminate this  expense to increase my cash flow.    

What suggestions would you make to a SINGLE FAMILY LTR investor surrounding property security system investment?