Linked Alarm installs, certifies and monitors commercial fire alarm systems across the Philadelphia region and southern New Jersey, carrying out inspections guided by NFPA 72 and the Philadelphia Fire Code. Its own site publishes Pennsylvania licence PA196390 and New Jersey burglar and fire licence 34BF0075300, and states that monitoring is delivered through a UL-listed central station. It is also an AVS-01 certified provider for alarm validation scoring. Fire alarm work sits alongside intrusion and video services.