| American Force Private Security Inc. | American Force Private Security Inc. | americanforce51@gmail.com | (866) 304-2627 | Alarm and generators | San Bernardino · San Bernardino County | — | — |
| American Vengeance Electronic Security Systems | Karel Mario Martinez | — | (626) 383 0978 | Alarm and generators | Yucaipa · San Bernardino County | — | — |
| Asp Security Services | Asp Security Services | info@aspsecurity.com | (888) 632-7099 | Alarm and generators | Redlands · San Bernardino County | — | — |
| Becerra Security INC | Leandro Becerra | — | (909) 772 9290 | Alarm and generators | Redlands · San Bernardino County | — | — |
| Brapga Security Systems Inc. | Brapga Security Systems Inc. | — | (844) 446-9347 | Alarm and generators | San Bernardino · San Bernardino County | — | — |
| California Sound INC | California Sound INC | — | (909) 388-1400 | Alarm and generators | San Bernardino · San Bernardino County | — | — |
| Cyber Guard Protection Inc. | Cyber Guard Protection Inc. | info@cyberguardprotection.com | (951) 666-1563 | Alarm and generators | San Bernardino · San Bernardino County | — | — |
| D Diederich's Security INC | David Joseph Diederich | — | (909) 985 7231 | Alarm and generators | Upland · San Bernardino County | — | — |
| Dc Audio | Dc Audio | — | (909) 381-3300 | Alarm and generators | San Bernardino · San Bernardino County | — | — |
| Delta Private Security | Delta Private Security | — | (800) 498-6371 | Alarm and generators | San Bernardino · San Bernardino County | — | — |
| Dr.soundz | Dr.soundz | — | (909) 381-0960 | Alarm and generators | San Bernardino · San Bernardino County | — | — |
| Elevator Security Systems LLC | Jason Dale Crews | sales@elevatorsecuritysystems.net | (949) 439 2014 | Alarm and generators | Rancho Cucamonga · San Bernardino County | — | — |
| Etiwanda Security Services INC | David James Haxton | — | (909) 815 8793 | Alarm and generators | Rancho Cucamonga · San Bernardino County | — | — |
| First Vision Security Systems | Donovan Dongwoo Lee | — | (909) 922 4413 | Alarm and generators | Chino · San Bernardino County | — | — |
| Generator Services Co INC | Robert Dean Butler | — | (800) 691 1601 | Alarm and generators | Rancho Cucamonga · San Bernardino County | — | — |
| Irongate Private Security Inc. | Irongate Private Security Inc. | — | (909) 383-0254 | Alarm and generators | San Bernardino · San Bernardino County | — | — |
| King Security | King Security | — | (626) 466 6678 | Alarm and generators | Apple Valley · San Bernardino County | — | — |
| Land Housing Security Service | Land Housing Security Service | — | (909) 474-9000 | Alarm and generators | San Bernardino · San Bernardino County | — | — |
| Mission Protection Services INC | Mission Protection Services INC | — | (800) 416-8369 | Alarm and generators | San Bernardino · San Bernardino County | — | — |
| Palisade Security | Palisade Security | — | (909) 496-1627 | Alarm and generators | San Bernardino · San Bernardino County | — | — |
| Private Security Training Center | Private Security Training Center | — | (909) 295-2747 | Alarm and generators | San Bernardino · San Bernardino County | — | — |
| Raven Security Surveillance | Christopher John Kupczynski | — | (626) 380 7437 | Alarm and generators | Rancho Cucamonga · San Bernardino County | — | — |
| Redlands Alarm Co | Redlands Alarm Co | — | (909) 792-5683 | Alarm and generators | Redlands · San Bernardino County | — | — |
| Resource One Low Voltage Security INC | Kevin Derrell Williams | — | (844) 810 6361 | Alarm and generators | Ontario · San Bernardino County | — | — |
| Safestreets | Safestreets | customerconcerns@safestreets.com | (855) 980-2545 | Alarm and generators | San Bernardino · San Bernardino County | — | — |
| San Bernardino & Riverside | San Bernardino & Riverside | — | (909) 822-1169 | Alarm and generators | San Bernardino · San Bernardino County | — | — |
| Security Academy & Training Center | Security Academy & Training Center | — | (951) 684-4117 | Alarm and generators | San Bernardino · San Bernardino County | — | — |
| Starbird Security Solutions Low Voltage | Starbird Security Solutions Low Voltage | — | (800) 723 4918 | Alarm and generators | Big Bear City · San Bernardino County | — | — |
| Stereo City | Stereo City | — | (909) 888-5513 | Alarm and generators | San Bernardino · San Bernardino County | — | — |
| Steve's Professional Glass Tinting & Auto Security INC | Steven Leonard Rodriguez | — | (909) 920 6844 | Alarm and generators | Upland · San Bernardino County | — | — |
| Tbm Fire And Security | Tbm Fire And Security | — | (909) 793-2194 | Alarm and generators | Redlands · San Bernardino County | — | — |
| Unlimited Car Sound | Unlimited Car Sound | — | (909) 888-8737 | Alarm and generators | San Bernardino · San Bernardino County | — | — |