| Business | Phone |
| Blackhawk Controls Co 11727 W Dearbourn Ave A, Milwaukee 53226 | (414) 259-5191 |
| Custom Electrical Products Inc 5141 N 35th St, Milwaukee 53209 | (414) 461-8200 |
| E-M Instruments 242 E Erie St, Milwaukee 53202 | (414) 272-7799 |
| Comtech Security 4227 W Forest Home Ave, Milwaukee 53215 | (414) 545-6423 |
| Wesco Distributing Inc 4111 W Mitchell St 500, Milwaukee 53215 | (414) 831-1504 |
| Sure Controls Milwaukee 53202 | (414) 277-7873 |
| Traudt Security Systems Llc Milwaukee 53213 | (414) 573-7793 |
| Acm Fire Protection Inc 2206 Miller Park Way, Milwaukee 53219 | (414) 541-9000 |
| Williams Security 6222 W Capitol Dr, Milwaukee 53216 | (414) 466-2001 |
| Labat Specialties Ltd 5011 W Ohio Ave, Milwaukee 53219 | (414) 327-6816 |
| Mor Sales Co 4421 S 44th St, Milwaukee 53220 | (414) 321-2252 |