serviceequipmentmass-notification

“Since 1983, we have been Chicagoland’s Premier Fire Detection and Prevention Specialist.”

Career Opportunities

ASSISTANT FIRE ALARM SYSTEM INSPECTOR / TESTER - If you are interested in this position and joining our team, please call Jack Davidson at (630) 434-7900 to arrange an interview. [Read More]

FIRE ALARM TECHNICIAN  - If you are interested in this position and joining our team, please e-mail your resume along with salary history to: info@affiliatedinc.com ATTN: Bill Gibson [Read More]

Recent Posts

What are Low Frequency Sounders? When Are They Used? Part I

Low frequency sounders are used to awaken people during a fire alarm event instead of a typical fire alarm horn. Studies have shown the lower sound frequency of 520 hz is more effective at waking up sleeping or inebriated persons so they’ve been required in sleeping areas (i.e. hotel rooms, on call rooms, etc.) in [Read More]

What is elevator recall? When is it required? When should it be integrated with a fire alarm system? How is that accomplished? These are a few of the many questions both elevator and electrical contractors have when elevator work is performed.... [Read More]