About Us

Large Business Products : Small Business Service

Trinity Security Systems is locally owned and operated from Elizabethtown, the heart of Pennsylvania. While larger companies may offer similar systems, our service is what sets us apart.

Trinity offers you the assurance that your security is truly important to us by taking the time to develop a relationship based on trust. We view our customers as friends, not numbers, and are happy to provide periodic follow-ups to ensure that you are satisfied with your system’s performance.


Trinity Security Systems uses state of the art, 24 hour, UL Listed, fully redundant central station monitoring. In addition, our monitoring fees are lower than the industry standards.

In the event of a fire, flood or burglary, our central station dispatches the proper emergency vehicles from the closest location.

For more information on our monitoring service, visit the COPS Monitoring site Here.


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Trinity Security Systems provides services in the following PA Counties: Chester, Adams, Franklin, Perry, Cumberland, Juniata, Mifflin, Snyder, Dauphin, Northumberland, Schuylkill, Berks, Lehigh, Montgomery, Huntingdon, Northampton, and in the following PA Cities: Lancaster, York, Harrisburg, Mechanicsburg, Camp Hill, Carlisle, Lebanon, Chambersburg, Millersburg, Selinsgrove, Reading, Macungie, Pottstown, Royersford, Wayne, Gettysburg, Hanover, Elizabethtown, Hershey, Allentown, Ephrata, West Chester, Collegeville, Quarryville and Hazelton.


The guys from Trinity have been great! There’s no better security company around.
– Paul B: Lancaster

Trinity made sure that my alarm installation was perfect. They cleaned up after themselves, and I can’t even see any wires.
– Lisa R: Elizabethtown

I feel so much safer in my home since my alarm was installed. Trinity did a great job at a very affordable price. I would never shop anywhere else for home security.
– Dennis N: Pottstown