Zeus Fire and Security acquires PM Alarms

PAOLI, Pa.—Zeus Fire and Security has acquired PM Alarms, a Chattanooga‑based provider of fire alarm and electronic security services, expanding its footprint across Southeast Tennessee.

PM Alarms, founded in 1961, delivers commercial fire alarm systems, intrusion security, access control, video solutions and video monitoring services. The company is licensed in Tennessee and Georgia and has built a long-standing regional reputation for locally focused service.

As part of the transaction, PM Alarms will align with Zeus partner Gallaher & Associates, strengthening Zeus’s presence in the Tennessee market. Zeus Fire and Security is a portfolio company of Baltimore‑based private equity firm Access Holdings.

“The addition of PM Alarms marks another step forward as we continue to strengthen our presence in Tennessee,” said Brandon Ramsey, president and COO of Zeus Fire and Security. “PM Alarms’ reputation and customer-first approach align well with Gallaher’s culture and our broader platform.”

Zeus said PM Alarms customers will gain access to an expanded range of fire protection and security services, as well as enhanced monitoring capabilities and national support resources. PM Alarms employees will also have access to expanded training and career development opportunities through the Zeus platform.

“We’re excited to welcome PM Alarms into the Gallaher and Zeus family,” said Max Thomas, president of Gallaher & Associates. “This partnership allows us to combine our shared commitment to local service with additional resources that benefit customers across the region.”

Stephen Castello, owner of PM Alarms, will remain involved during the transition to support continuity for customers and employees.

“Joining Gallaher and Zeus is the right next step for our customers and our team,” he said. “Our customers will continue working with the same people they know, with additional tools and support behind them.”