TRIGON Electronics, Inc. is the founder of the processor based Telephone Entry business.

• See also:
• Masterformat 2004
• 08 34 59 - Vault Doors and Day Gates
• 11 12 00 - Parking Control Equipment
• 11 12 13 - Parking Key and Card Control Units
• 11 12 16 - Parking Ticket Dispensers
• 11 12 26 - Parking Fee Collection Equipment
• 11 12 33 - Parking Gates
• 11 16 00 - Vault Equipment
• 11 16 13 - Safe Deposit Boxes
• 11 16 16 - Safes
• 26 24 00 - Switchboards and Panelboards
• 28 10 00 - ELECTRONIC ACCESS CONTROL AND INTRUSION DETECTION
• 28 13 00 - Access Control
• 28 13 53 - Security Access Detection
• 28 16 00 - Intrusion Detection
• 28 20 00 - ELECTRONIC SURVEILLANCE
• 28 23 00 - Video Surveillance
• Masterformat 1995
• 11020 - Security and Vault Equipment
• 11150 - Parking Control Equipment
• 13700 - Security Access & Surveillance
• 16440 - Switchboards, Panelboards, and Control Cen