Edwards EST MMXVR SF 11/02 The Switch and LED combination

The Switch and LED combination is typically used for telephone circuits

The FRM-1 Addressable Relay Module provides the system with a dry-contact output for activating a variety of auxiliary devices

and other fire alarm system peripherals

converting this data into digital signals

Ground fault detection by address

Edwards EST MMXVR SF 11/02 The Switch and LED combinationFiber optics communication links provide a high level of immunity from electrical noise. The circuits are power limited and suitable for use through hazardous atmospheres. Fiber optic circuits also provide a high level of security and are resistant to the effects of moisture. The choice of either single mode or multi mode fiber links is one of cost vs the distances between nodes. System performance is identical with either single or multi mode fiber.