LONGHALL does it all!
- MAINTENANCE OF EXISTING SYSTEMS
- SECURITY SYSTEMS
- FIRE ALARM SYSTEMS
- LIFE SAFETY SYSTEMS
- ACCESS CONTROL SYSTEMS
- VIDEO SURVEILLANCE SYSTEMS
- INTEGRATED I.D. CARD SYSTEMS
- TELEPHONE SYSTEMS
- DATA NETWORKS
- COMMERCIAL SOUND SYSTEMS
- FACILITY MANAGEMENT
- SYSTEMS & DESIGN CONSULTING
- SYSTEM INTEGRATION
- U.L. LISTED 24-HOUR MONITORING