The FDC80 series contact closure transmitter and receiver units provide transmission of up to eight independent supervised or unsupervised dry switch or relay contact closures over a single optical fiber. Microprocessor-based logic transmits the contact closure information in packets that are ordered and encoded, ensuring extremely robust and reliable transmission.
- Automatic resettable, solid-state current limiters
- Hot-swappable rack modules
- Indicating LEDs for monitoring purposes