| Business | Phone |
| Bulldog Alarm Systems 16761 E Jefferson Ave, Grosse Pointe 48230 | (313) 884-6668 |
| International Security Alarms 19807 Mack Ave, Grosse Pointe 48236 | (313) 884-2004 |
| M & G Alarm Co Grosse Pointe 48236 | (313) 882-7465 |
| Mc Neill Sales Group Inc 541 Cook Rd, Grosse Pointe 48236 | (313) 885-3103 |
| Saturn Security System 19807 Mack Ave, Grosse Pointe 48236 | (313) 884-2595 |