EL CAJON, Calif.—Alarm Relay, a full-service security company, is embarking on a multiphase mobile strategy with both near- and long-term goals. One of the opening phases of that plan is the launch of ...

Last column, I wrote about various applications where fire alarm relays could be used to integrate a commercial fire alarm system with other electrical systems at a ...

When it comes to electronics, it seems like a relay is such a simple device – yet, it is able to interface some pretty elaborate high-end systems with a fire alarm system. Working with relays is an ...