Circle9 is one of New England’s most experienced residential and commercial electronics and smart home/office companies. We’ll help you choose a solution that fits your needs and budget, and we’ll install it with meticulous attention to detail.

New Powerfully simple.

Everything exactly the way you like it.
From security to networks to lighting,
climate and entertainment we’ll to
personalize your home or office so
you can control it all with a touch
from a single app or voice command.

Circle9 is the new name for HD Systems Integration.
We’re the same company with a new look,
serving our community since 2006.