| Business | Phone |
| Alarmco Services Inc 915 Riverbend Blvd, Longwood 32779 | (407) 389-0559 |
| Alarmtronics Systems 1084 N County Road 427, Longwood 32750 | (407) 834-7233 |
| American Central Alarms 600 N Us Highway 17/92, Longwood 32750 | (407) 261-5401 |
| United Security & Comms Inc 1500 Lincolnwood Ln, Longwood 32750 | (407) 699-1224 |
| Superior Security 220 Tollgate Trl, Longwood 32750 | (407) 332-1305 |