| Business | Phone |
| A State Alarm Systems 1220 W 3rd St, Cleveland 44113 | (216) 781-4500 |
| Aaa Alarm Systems Div 2020 Carnegie Ave, Cleveland 44115 | (216) 861-6054 |
| Advanced Federated Protection 1814 E 40th St, Cleveland 44103 | (216) 431-6480 |
| Advanced Security Alarm 7517 James Dr, Cleveland 44133 | (440) 237-3527 |
| Alarm Core 10640 Saint Clair Ave, Cleveland 44108 | (216) 761-0575 |
| All Phase Security 17316 Harvard Ave, Cleveland 44128 | (216) 491-8989 |
| All Secure Security Systems 9740 Sunrise Blvd, Cleveland 44133 | (440) 230-9110 |
| Americana Security Alarms Cleveland 44147 | (440) 746-0466 |
| Asp Security Systems 7290 Mayberry Dr, Cleveland 44130 | (440) 238-7766 |
| Best Security Cleveland 44122 | (216) 464-1090 |
| Blue Knight Security Systems 580 E 200th St # 103, Cleveland 44119 | (216) 486-2050 |
| Briar Enterprises 25700 Lakeland Blvd, Cleveland 44132 | (216) 261-7870 |
| Castle Security Systems 2435 Sittingbourne Ln, Cleveland 44122 | (216) 831-2450 |
| Centurion Security Systems 3145 Essex Rd, Cleveland 44118 | (216) 932-3828 |
| Yps Integrated Systems 30340 Solon Industrial Pkwy, Cleveland 44139 | (440) 248-1173 |
| Wells Fargo Alarm Svc 1440 Snow Rd, Cleveland 44134 | (216) 661-9469 |
| Us Protective Svc 18200 Miles Rd, Cleveland 44128 | (216) 475-8550 |
| Us Protective Svc 4734 Spring Rd, Cleveland 44131 | (216) 741-4058 |
| Twentieth Century Burglar Co 1485 E 107th St, Cleveland 44106 | (216) 421-8988 |
| Cuyahoga Technical Svc 17704 Riverway Dr, Cleveland 44107 | (216) 521-2525 |
| Defender Security Co Cleveland 44102 | (216) 631-6968 |
| Digital Security Systems 15026 Madison Ave, Cleveland 44107 | (216) 521-0800 |
| Sutton Security Systems Inc 11896 Greyfriars Cir, Cleveland 44133 | (440) 582-8788 |
| Target Security 19071 Detroit Rd, Cleveland 44116 | (440) 895-5300 |
| Special Tronics 4200 Rocky River Dr, Cleveland 44135 | (216) 251-6161 |
| Sievers Security Systems 18210 Saint Clair Ave, Cleveland 44110 | (216) 383-1234 |
| Securi-Com 4721 E Royalton Rd, Cleveland 44147 | (440) 526-2121 |
| Security Associates Intl 3659 Green Rd, Cleveland 44122 | (216) 591-9220 |
| Security Plus 14239 Garfield Ave, Cleveland 44107 | (216) 226-9600 |
| Security Techniques Inc 25000 Euclid Ave # 200, Cleveland 44117 | (216) 732-9200 |
| Gillmore Security Systems 26165 Broadway Ave, Cleveland 44146 | (440) 232-1000 |
| Residential Security Systems 7552 Saint Clair Ave # E, Cleveland 44103 | (440) 946-2715 |
| Guardian Alarm 1507 Brookpark Rd, Cleveland 44109 | (216) 739-9199 |
| Hamilton Alarm Co Cleveland 44139 | (440) 248-7940 |
| Rct Security 23760 Miles Rd, Cleveland 44128 | (216) 752-5474 |
| Premier Marketing Assoc 30300 Solon Indust Pkwy # B, Cleveland 44139 | (440) 914-0536 |
| Progressive Security 2111 S Green Rd, Cleveland 44121 | (216) 691-1919 |
| Protech Alarm Systems Cleveland 44147 | (440) 838-1511 |
| Power Alarm Security Systems 25086 Lakeland Blvd, Cleveland 44132 | (216) 289-5600 |
| Independent Security Svc 3256 W 84th St, Cleveland 44102 | (216) 631-3344 |
| Omni Security 300 Ken Mar Industrial Pkwy, Cleveland 44147 | (440) 526-0095 |
| On Guard Security 10477 Cedar Ave # Ll4, Cleveland 44106 | (216) 371-6141 |
| On Guard Security 5264 Chickadee Ln, Cleveland 44124 | (440) 646-9622 |
| North Coast Security Inc 19524 Center Ridge Rd, Cleveland 44116 | (440) 835-9999 |
| Ohio Alarm 1514 E 191st St, Cleveland 44117 | (216) 692-1204 |
| Lake Alarm Svc 562 E 200th St, Cleveland 44119 | (216) 692-2296 |
| Lake Erie Security 1478 Winchester Ave, Cleveland 44107 | (216) 226-3901 |
| National Sentry Security Systs Cleveland 44121 | (216) 291-0555 |
| New Age Security Inc 22972 Lorain Rd # 203, Cleveland 44126 | (440) 979-9000 |
| New Concept Security 4022 Verona Rd, Cleveland 44121 | (216) 382-1160 |
| Monarch Systems Inc Cleveland 44121 | (216) 291-3188 |
| Meister Protection 4249 Ellison Rd, Cleveland 44121 | (216) 382-3560 |
| Meister Protection 7924 Harvard Ave, Cleveland 44105 | (216) 382-3560 |