| Business | Phone |
| Remcor Technical Industries 7025 Alamitos Ave, San Diego 92154 | (619) 424-9218 |
| Gamut Electronics Llc 10601 Tierrasanta Blvd # 126, San Diego 92124 | (858) 974-3657 |
| Ge Infrastructure Security 15175 Innovation Dr, San Diego 92128 | (858) 521-0556 |
| Honeywell 2055 Dublin Dr, San Diego 92154 | (619) 671-5600 |
| Security Systems San Diego 1041 Market St, San Diego 92101 | (619) 330-5866 |