| Business | Phone |
| Matrix Technologies 2310 Southlake Ct, Irving 75038 | (972) 594-7107 |
| Artron 3301 Conflans Rd 307, Irving 75061 | (972) 399-0752 |
| Protection Concepts 1130 Luke St, Irving 75061 | (972) 986-4157 |
| Specified Protection Systems 3321 W Pioneer Dr, Irving 75061 | (972) 986-1910 |
| Mitec Controls Of Dallas 3136 Skyway Cir S, Irving 75038 | (972) 570-1918 |
| Siemens Cerberus Div 8600 N Royal Ln 100, Irving 75063 | (972) 929-5044 |