| Business | Phone |
| Alarme Telesecure 3330 Rue King O #190, Sherbrooke J1L 1C9 | (819) 563-3333 |
| Securite Excel 1645 King St W, Sherbrooke J1J 2C7 | (819) 820-2424 |
| Courtier B & B 260 Rue Ball, Sherbrooke J1H 1V4 | (819) 820-1036 |
| Domotek Estrie 2800 Rue Du Manoir, Sherbrooke J1L 2A5 | (819) 348-8888 |