The Wire

Nebraska does not have a specific intercom license, though fire alarm work requires a Fire Alarm Installer license. Most residential intercom installations don't require permits while commercial projects typically need local permits. Insurance requirements apply for licensed work.

Feb 8, 2026

Montana exempts electrical work under 90 volts from licensing, including most burglar alarm systems. Local municipalities may have alarm registration requirements and false alarm ordinances. Check with local police departments for registration procedures.

Feb 8, 2026

Montana exempts electrical work involving 90 volts or less from state licensing requirements, covering most intercom installations. Local jurisdictions may have their own permit requirements. No specific low voltage license is required.

Feb 8, 2026

Missouri requires an Electronic Security Company license to install burglar alarms, though work under 48 volts is exempt from electrical licensing. Most municipalities have alarm registration requirements and false alarm ordinances with escalating fees.

Feb 8, 2026

Missouri exempts Class 2 and Class 3 low voltage circuits from electrical licensing requirements, covering most intercom installations. Local jurisdictions may have permit requirements. An optional statewide license simplifies working across multiple cities.

Feb 8, 2026

Mississippi has an Alarm Systems license classification through MSBOC for commercial projects over $50,000. Local jurisdictions handle smaller project licensing and alarm registration. Most municipalities have false alarm ordinances with registration requirements.

Feb 8, 2026

Mississippi issues electrician licenses at the local level with no statewide low voltage license. Commercial projects over $50,000 require a contractor license from MSBOC. Local permit requirements vary by city and county. Most residential intercom work is minimally regulated.

Feb 8, 2026

Minnesota requires a Power Limited Technician (PLT) license for burglar alarm installation, requiring 36 months of supervised experience. Many municipalities require alarm registration with false alarm ordinances. Commercial work requires permits while residential typically needs alarm registration.

Feb 8, 2026

Minnesota requires a Power Limited Technician (PLT) license for intercom installation, requiring 36 months of supervised experience. The PLT is a personal license - technicians must work for licensed contractors. Most residential work is permit-exempt while commercial requires permits.

Feb 8, 2026

Massachusetts requires both a Systems license (Class D or C) and Security Clearance Certificate (S-License) for burglar alarm installation. Most municipalities require alarm registration with false alarm ordinances. Commercial work requires permits while residential typically needs only alarm registration.

Feb 8, 2026

Massachusetts requires Systems Technician (Class D) or Systems Contractor (Class C) licenses for intercom installation. The Class D requires 4,000 hours experience and 300 hours education. Commercial work requires permits through local building departments while most residential work is permit-exempt.

Feb 8, 2026

Maryland regulates alarms at multiple levels with state oversight of monitoring companies and county-level contractor registration and alarm permits. Most jurisdictions require alarm registration and have false alarm ordinances. Commercial projects typically require building permits while residential work needs alarm registration.

Feb 8, 2026

Maryland has a multi-jurisdictional approach to low voltage licensing with no state-level low voltage license. Each county has its own contractor registration and permit requirements. Most residential intercom installations are permit-exempt while commercial projects typically require permits through local building departments.

Feb 8, 2026

Maine requires a Limited Electrician - Low Energy license to install burglar alarm systems. Many municipalities have alarm registration requirements and false alarm ordinances. Most residential installations are permit-exempt while commercial projects may require permits through local building departments.

Feb 8, 2026

Maine regulates intercom installation through the Limited Electrician - Low Energy license, requiring 270 hours of education and 4,000 hours of experience. Most residential installations are permit-exempt when performed by licensed contractors, while commercial projects typically require permits through local code enforcement offices.

Feb 8, 2026