About Marshall Alarm Systems Inc
Marshall Alarm Systems Inc is a family-owned security and fire alarm company based in Yorktown Heights, New York. Its work includes installing, servicing, and repairing fire and security alarm systems for residential and commercial settings. Services include video systems and access control among its offerings. The provider’s published material describes custom-designed fire, security, video, and access-control systems, along with monitoring and inspections. It states that the company works with both new and existing systems and represents multiple manufacturers.
Business description
We are a second generation, family owned and operated Security and Fire Alarm Company, Our company installs, services and repairs all fire and security alarm systems. We represent the following manufacturers: Honeywell, Ademco, Edwards Mirtone, Napco, Firelite, Silent Knight, System sensor, Northern computers and Keri access control.
Services
Explore the services below and confirm the scope of your project directly with the provider.
Fire alarm systems
Installation, servicing, and repair of fire alarm systems is available. Services include residential and commercial fire alarm systems, along with installation, monitoring, and inspections.
Security alarm systems
The company states that it installs, services, and repairs security alarm systems. Services include residential and commercial security systems and describes work with new and existing systems.
Access control
Access control appears among the provider’s system categories, and Keri access control is named among the represented manufacturers.
Alarm repair and maintenance
The business offers servicing and repairing fire and security alarm systems. Services include repair and maintenance and states that the company works with new and existing systems.
Planning a fire or security alarm project
Before requesting an alarm project, list the areas that need protection, the type of property, and whether the goal is intrusion detection, fire notification, or both. Note existing panels, sensors, wiring, cameras, or access equipment that may need to remain in place. A written inventory of current equipment and recurring issues can make a service discussion more precise. The provider states that it installs, services, and repairs fire and security alarm systems and works with new and existing systems.
Choosing surveillance and access features
For video surveillance, consider entrances, driveways, shared areas, lighting conditions, recording needs, and who should be able to view footage. For access control, identify doors or gates, user groups, and what should happen when credentials change. These are general planning considerations, not a promise about the provider’s process.
Questions to ask before scheduling work
Ask which parts of an existing system can be retained, what testing or inspection is included, how alerts or footage are handled, and what documentation will be provided after installation or repair. Confirm location coverage and equipment compatibility before arranging an appointment. The published material identifies installation, monitoring, inspections, and service across several named counties, but individual project details should be confirmed directly.
Service area
Based in Yorktown Heights, NY.
Contact the provider to confirm availability at your address.
Questions about Marshall Alarm Systems Inc
What types of alarm systems does Marshall Alarm Systems work on?
What types of alarm systems does Marshall Alarm Systems work on?
Does the company work with both homes and businesses?
The published The business offers installation, servicing, and repair for fire and security alarm systems. Services include residential and commercial system categories. A project consultation can clarify the appropriate configuration for a particular property.
Does Marshall Alarm Systems provide video surveillance?
Yes. Services include video surveillance for homes or offices and identifies residential and commercial security and fire alarm systems.
Is access control available?
Services include access control as one of the company’s system categories. The exact equipment and entry points needed depend on the property and the desired access arrangement.
Which equipment manufacturers does the company represent?
The company’s it represents Honeywell, Ademco, Edwards Mirtone, Napco, Firelite, Silent Knight, System Sensor, Northern Computers, and Keri access control. Compatibility should be discussed before work begins.
What areas does Marshall Alarm Systems serve?
Because the record does not provide a current project-specific coverage confirmation, visitors should ask whether their location is served.
Updated September 13, 2026.