| Business | Phone |
| Act Security 4681 Northfield Rd, Cleveland 44128 | (216) 332-9300 |
| Adi 7710 First Pl # A, Cleveland 44146 | (440) 439-7002 |
| Adr Investigation Corp 26210 Emery Rd # 307, Cleveland 44128 | (216) 514-8888 |
| Alarmax Distributors Inc 5353 Majestic Pkwy # B, Cleveland 44146 | (440) 786-0544 |
| American Electronic Security 1328 Linda St, Cleveland 44116 | (440) 331-8181 |
| Best Access Systems 5422 E 96th St, Cleveland 44125 | (216) 662-3282 |
| C W Security & Tlcmmnctns 17100 Lorain Ave, Cleveland 44111 | (216) 251-2955 |
| Cardkey Systems Inc 9797 Midwest Ave, Cleveland 44125 | (216) 587-0100 |
| Centaur Cleveland 44136 | (440) 238-5042 |
| Com-One Sound 4746 State Rd, Cleveland 44109 | (216) 485-1555 |
| Complete Security Solutions 750 Huron Rd E, Cleveland 44115 | (216) 556-0331 |
| Courtland Security 2228 Cranston Rd, Cleveland 44118 | (216) 371-1909 |
| Thermo Rm & P 26400 Broadway Ave, Cleveland 44146 | (440) 439-2020 |
| Stand Guard Security 3911 Cypress Ave, Cleveland 44109 | (216) 635-0879 |
| Empire Security 19071 Detroit Rd # 101, Cleveland 44116 | (440) 895-1515 |
| Empire Surveillance & Security 4171 Ridge Rd, Cleveland 44144 | (216) 351-1848 |
| St Moritz Security Svc 2000 E 9th St, Cleveland 44115 | (216) 472-1263 |
| Security 3747 Euclid Ave, Cleveland 44115 | (216) 431-3139 |
| Security 19 15700 Terrace Rd, Cleveland 44112 | (216) 681-1919 |
| Security Equipment Div 14915 Woodworth Rd, Cleveland 44110 | (216) 451-1404 |
| Security One Inc Cleveland 44141 | (440) 546-1440 |
| Security Products Co 14915 Woodworth Rd, Cleveland 44110 | (216) 451-1400 |
| Security Source Inc 3317 Brookpark Rd, Cleveland 44134 | (216) 351-0399 |
| Security Zone 9710 Cherry Tree Dr, Cleveland 44136 | (440) 239-1842 |
| Safe Side Security 620 E 185th St, Cleveland 44119 | (216) 481-3526 |
| Gilmore Security 26165 Broadway Ave, Cleveland 44146 | (440) 232-2356 |
| Robert Powell 13930 Aspen Oval, Cleveland 44133 | (440) 237-3237 |
| Protection One Inc 10139 Royalton Rd # A, Cleveland 44133 | (440) 951-9265 |
| Insights Security Systems Inc 26235b Cannon Rd, Cleveland 44146 | (216) 741-7233 |
| Personalization Plus 5353 Mayfield Rd, Cleveland 44124 | (440) 446-9682 |
| Omni Data Research 21863 Aurora Rd, Cleveland 44146 | (216) 927-5018 |
| On Huard Security 20445 Emerald Pkwy, Cleveland 44135 | (216) 898-0013 |
| Kahoun & Co Security Systems 20545 Center Ridge Rd, Cleveland 44116 | (440) 356-1649 |
| Lms Marketing Cleveland 44116 | (440) 356-4870 |
| Lok-Itt Inc 27000 Richmond Rd, Cleveland 44139 | (440) 349-0110 |