Edwards has been a pioneer in the design, manufacture and installation of leading edge fire alarm signals and systems for over 130 years. Serving Fortune 500 and other leading worldwide companies, our fire alarm products perform to the exacting standards required to ensure workplace safety.   Selecting the right industrial fire alarm signal involves more than calculating decibel levels or choosing one light source over another . It involves ensuring that a signal can operate properly and effectively in the environment in which it will be used.