Alert Protective Services has over 30 years of experience in securing homes and businesses in the Chicago area. Alert Protective Services offers a range of complete, customisable home security solutions to protect their valued customers. They offer surveillance tools, intercoms and home security systems with remote monitoring and control capabilities. Alert Protective is also a member of the Illinois Electronic Security Association.

Denning Electronics has solved big communications, protection, and surveillance problems by providing sales and technical support to distributors, security system integrators, engineering design firms, architects, and system users. Their specialties include outdoor intrusion detection, video and audio surveillance, video/audio/data networks and transmission, access control, and ballistic/blast/chemical/acoustic barriers.

HSM Electronic Protection Services, Inc. is now Stanley Security. Based in the USA, the company offers video surveillance, fire, access control etc. design and installation services to commercial businesses, educational & financial institutions, retail stores, healthcare & government facilities & other industries.

Security Alarm provides installation services for homes, farms, businesses, and buildings. The company's portfolio covers fire safety, access control, video surveillance, burglar alarm, and home automation.

A part of Stanley Black & Decker, STANLEY Convergent Security Solutions, Inc. is the second largest electronic security company based on total revenue and one of the largest system integrators in the United States. STANLEY CSS designs, installs, monitors and services security systems for industrial, government, commercial, residential and national account customers.

VinTech is a Chicago-based, full service IP Security provider. They guarantee maximum client satisfaction by providing reliable, cost-effective and flexible electronic security solutions.