Data Sheet
FEATURES
› Transmits up to eight contact closures over one optical fiber
› Eight channel Point-to-Point architecture
› Optically isolated inputs rated at 1500 V to ground
› Designed to meet full compliance with the environmental
requirements (ambient operating temperature, mechanical
shock, vibration, humidity with condensation, high-line/low-
line voltage conditions and transient voltage protection) of
NEMA TS-1/TS-2 and the Caltrans Specification for Traffic
Signal Control Equipment.
› Microprocessor-based logic eliminates random contact
closure status in electrically noisy environments.
› Ambient operating temperature range: -40˚ C to +75˚ C for
deployment in virtually any unconditioned out-of-plant or
roadside environment
› Status indicating LEDs provide rapid indication of critical
operating parameters
› Hot-swappable rack modules
› Interchangeable between stand-alone or rack mount use –
ComFit
› May be DIN-rail mounted by the addition of ComNet DIN-Rail
adaptor plate (Model DINBKT1 or DINBKT4, sold separately)
› Lifetime Warranty
APPLICATIONS
› Remote control of mission-critical vital trackside relaying or
roadside signaling equipment
› Remote operation of lane, gate, or door operators
or controllers
› Building HVAC, industrial control, and SCADA networks
› Non-latching fire and intrusion alarm systems
› Non-latching triggered alarm & PIR (Passive Infrared)
detection systems
› Latching Relay output applications
The ComNet
™
FDC8ISOT 8-Channel Contact Closure Transmitter unit provides up to
eight independent normally-open (NO) dry contact closures over one multimode or
single-mode optical fiber, when used in conjunction with the companion ComNet model
FDC8NLR Non-Latching Receiver or FDC8R Latching Receiver units. Each of the contact
closure inputs are optically isolated at 1500V to ground, for those applications where
high stray or transient voltages may exist. Microprocessor-based logic in the FDC8ISOT
Transmitter detects a customer-furnished switch or contact closure, and encodes the
closure into robust data packets that are mapped and transmitted to the FDC8NLR
Receiver. Packets received with excessive bit errors will not result in random changes in
the receiver relay contact resting or actuated states, making this system ideal for mission-
critical remote switching applications. Plug-and-play design ensures ease of installation
and operation, and no optical or electrical adjustments are ever required.
FDC8ISOT(M,S)1
8-Channel Optically Isolated Contact Closure Transmitter
8
HARDENEDINCLUDED
LIFETIME WARRANTY WWW.COMNET.NET TECH SUPPORT: 1.888.678.9427