Montana’s oldest alarm company - because we do it right!

Interstate Alarm Company sells, installs, services, and monitors:

• Commercial security and fire systems

• Residential security and fire systems

• Critical systems consisting of carbon monoxide, gas, water leak, or temperature sensors

• Camera systems

We provide 24-hour UL certified central station monitoring and 24-hr on-call emergency technical assistance.

We also have NICET certified technicians to perform annual and semi-annual fire alarm inspections to keep our customers compliant with fire code.