Jefferson Chamber of Commerce United Security Alarm, Inc Share: Security - Alarm Systems / Safes & Locks / CCTV United Security Alarm, Inc Visit Website 5421 Lapalco Blvd., Ste. C Marrero, Louisiana 70072 (504) 212-0252 About Map About Locally owned and operated. Providing sales, service, installation & monitoring of electronic security, fire, access & video systems to Greater New Orleans and surrounding areas for over 29 years. What's Nearby? Distance: 5 10 15 20 25 50 mi.