| Business | Phone |
| Barry Controls 960 Turnpike St # 6, Canton 2021 | (781) 828-7822 |
| Siemens Building Technologies 85 John Rd # 1, Canton 2021 | (781) 575-1900 |
| Little Inc 100 High St, Canton 2021 | (781) 821-8183 |
| Invensys Building Systems 427 Turnpike St, Canton 2021 | (781) 828-6770 |