- Automatic resettable, solid-state current limiters
- Hot-swappable rack modules
- Indicating LEDs for monitoring purposes
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.