Perimeter Intrusion Security
- Design and manufactures optical fiber perimeter intrusion detection systems.
- http://www.opticsens.com/

Southwest Microwave, Inc.
- Provides electronic perimeter intrusion detection and wireless CCTV transmission systems.
- http://www.southwestmicrowave.com/

Gunnebo UK Limited
- Perimeter security under the Elkosta and Wego brand names.
- http://www.gunnebo.co.uk/

RBtec Inc
- Manufacturer and installer of fencing and electronic monitoring systems, with technical specifications, illustrated portfolio, and company news. [English, Russian and Spanish]
- http://www.rbtec.com/

Fiber SenSys
- Manufactures fiber-optic security products.
- http://www.compudyne.com/ap/fiber%5Fsensys/

Trap International CC
- Wire-free outdoor early security warning system. Includes product and technical information, and list of authorized dealers. South Africa.
- http://www.roboguard.co.za/

GPS Standard S.p.a.
- Perimeter protection systems integrated with remote surveillance applications. Product information and manuals. Italy.
- http://www.gps-standard.com/

D-Fence Security Systems Ltd.
- Manufacturer of electronic fence products. Israel [English, Russian and Spanish]
- http://www.d-fence.com

RuSec - Russian Security systems
- Outdoor perimeter protection. Equipment made in Russia.
- http://rusec.com/

Portcullis Perimeter Security.
- Security Fencing plus a wide range of access options from swing or sliding automatic gates. Australia
- http://www.portcullis.com.au

Integrated Security Corporation
- Monitoring and control systems, perimeter protection, and security management. Walled Lake, Michigan.
- http://www.integratedsecuritycorp.com/

ECSI International, Inc.
- Designs and manufactures custom engineered high profile perimeter, physical, and information security systems.
- http://www.anti-terrorism.com/

Magal Security Systems Ltd.
- Manufacturer of electronic monitoring systems, with company news and technical specifications,. (Nasdaq: MAGS). Israel
- http://www.magal-ssl.com/

Advanced Perimeter Systems Limited
- designer and manufacturer of security products. United Kingdom. Product information and manuals.
- http://www.aps-perimeter-security.com/

GM Advanced Security Technologies Ltd.
- Electronic fence security system for hard-wired and wireless perimeter security.
- http://www.gmsecurity.com/