Fire Alarm, Security and Video Systems in Westchester, NY


Marshall Alarm Systems, Inc provides custom designed fire, security and video systems to installation, monitoring and inspections. Marshall Alarm Systems, Inc represents all major manufacturers allowing the versatility to service both new and existing alarm systems in Westchester NY.

Located in Yorktown Heights, NY, we are one of the foremost electronic security integrated solutions providers since 1976.

See all locations we cover in the Tri-State area.

Marshall Alarm Systems, Inc. is licensed by the NYS Department of State as a Security & Fire Alarm Installer. License # 12000042586.


We’ve partnered with

Advanced Warning Systems

A. West Security

Centrak Security

JJ Security

Northeast Security Systems

All Point Security

LV Electric

Fowler Electric


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