G&J Customized Security Systems was established in 1992.  We proudly serve the Northern Maryland and Southern Pennsylvania areas, specializing in residential and commercial low-voltage needs.  

The G&J Customized Security Systems Difference

G&J Customized Security Systems consistently delivers unsurpassed value to our customers by not only selling low-voltage products but also installing them personally.  We serve as the owners, sales, installation and service team and we are proud to serve you.  

Our Services:

• Security for home and business
• 24-hour monitoring
• Home Theater
• Video Cameras
• Speakers Surveillance
• Window Candles
• Network Wiring
• Access Control
• Fire/Smoke/Medical Alerts
• Intercom
• Central Vacuum
• Driveway Gates