We Are Here. Signal 88 Security is dedicated to providing peace of mind for you and for your customers. Specializing in roving patrol for residential, commercial, and retail customers.

We are a leading security services company with more than 200,000 employees and revenues exceeding $8.5 billion. With offices located throughout the nation as well as internationally (Canada, Mexico, United Kingdom), we are responsible for protecting more than 50,000 client sites. Since 1957, and over 60 years of deep industry experience and expertise, we have been providing customized physical security solutions to meet the specific needs of organizations of every size, in any industry.

As an authorized dealer of ADT Security Services, Inc., home security systems, SecureWatch, LLC, aids in safeguarding families. Founded in two cities in Tennessee, the company has expanded to nearly 50 cities in 11 states. Providing exceptional security solutions and superior customer service, SecureWatch offers a variety of ADT packages, including services and systems to detect fires, provide medical and other emergency alerts, monitor carbon monoxide levels, register and report the sound of breaking glass, and use two-way voice and spoken alerts to provide a sort of virtual surveillance. The highly trained technicians who install the cutting-edge technology can integrate sensors and detectors to provide a solution for almost any need. As an ADT authorized dealer, SecureWatch has met st

Diligence Security & Patrol, LLC, is a locally owned and operated, fully licensed, bonded and insured company that provides professional contract security guard services throughout Knoxville and surrounding counties. We offer armed and unarmed security guard services for both business and residential. Diligence Security and Patrola??s management is comprised of former law enforcement officers/business managers with many years of experience managing personnel, conducting investigations, and working in the security and police fields. We offer Wedding Watch, security specifically for safety at weddings and receptions. We are a minority, women owned company. We also offer handgun safety and security guard certification classes.