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The ComNet FDC8 series contact closure transmitter and receiver provides transmission of up to eight independent contact closures over one RS232 link or optical fiber. Microprocessor-based logic sends the contact information in packets that are ordered and encoded, ensuring extremely robust transmission. Packets that are garbled, packets out of sequence, and transmission bit errors will not cause random changes of state on the contact relays.
Indicating LEDs for monitoring power and contact channels
Automatic resettable solid-state current limiters
Microprocessor-based logic and latching relays in the receiver unit