Transmit 8 Contact Closures Over Fiber

Product Overview

The system provides transmission of eight (8) independent input signals over fiber optic cable. Applications include alarm event triggering, building automation, environmental control systems, fire & alarm systems, gate control, traffic signal control equipment, and more.

Fiber optic cable is immune to RF noise, high voltages, and extends the signal transmission range up to 100km. A complete system requires two (2) units a 24-48VDC power source on each end, and two (2) matching SFP transceivers.

The Contact Input (TX) is configured with input terminals and the Contact Output (RX) has output relays. Each unit features a NC/NO alarm contact for system monitoring and convenient LED indicators to view system status.

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Lead Time: 1 to 2 Weeks*

For volume pricing and/or delivery outside of the US and Canada, please request a quote using the link below.

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8 Channel Contact Closure SFP

Product configurationTransmitter/ReceiverInputsInput TypeOutputsOutput TypePart numberPrice
1 SFP Slot, 8 Digital Inputs - Dry Contact Sensing, Powering Voltage 24-48 DCTransmitter8 Digital InputsDry Contact SensingN/AN/A8CD-TX-DR-2$470.00
1 SFP Slot, 8 Digital Inputs - 12-24VDC Sinking, Powering Voltage 24-48 DCTransmitter8 Digital Inputs12-24VDCN/AN/A8CD-TX-24-2$470.00
1 SFP Slot, 8 Digital Inputs - 24-48VDC Sinking, Powering Voltage 24-48 DCTransmitter8 Digital Inputs24-48VDCN/AN/A8CD-TX-48-2$470.00
1 SFP Slot, 8 Relay Outputs - Normally Open, Powering Voltage 24-48 DCReceiverN/AN/A8 Relay OutputsNormally Open8CD-RX-NO-2$470.00
1 SFP Slot, 8 Relay Outputs - Normally Closed, Powering Voltage 24-48 DCReceiverN/AN/A8 Relay OutputsNormally Closed8CD-RX-NC-2$470.00
  • A complete system requires one Transmitter and one Receiver
  • SFP Transceivers are sold separately (see list below)

155M SFP Transceiver

Short descriptionModeConnectorDistanceFibersWavelengthPart numberPricehf:att:pa_distancehf:att:pa_fibers
Multimode LC 2km/1.2 milesMultimodeLC2km/1.2 milesDual Fiber1310nmSFP-155-04-2$90.00
Singlemode LC 20km/12.4 milesSinglemodeLC20km/12.4 milesDual Fiber1310nmSFP-155-30-2$110.00
Singlemode LC 60km/37 milesSinglemodeLC60km/37 milesDual Fiber1310nmSFP-155-31-2$210.00
Singlemode LC 120km/74 milesSinglemodeLC120km/74 milesDual Fiber1550nmSFP-155-34-2$310.00
Singlemode LC 20km/12.4 miles - ASinglemodeLC20km/12.4 milesSingle Fiber - Side AT-1310/R-1550SFP-155-20-2$140.00
Singlemode LC 20km/12.4 miles - BSinglemodeLC20km/12.4 milesSingle Fiber - Side BR-1310/T-1550SFP-155-21-2$140.00
Singlemode LC 60km/37 miles - ASinglemodeLC60km/37 milesSingle Fiber - Side AT-1310/R-1550SFP-155-24-2$240.00
Singlemode LC 60km/37 miles - BSinglemodeLC60km/37 milesSingle Fiber - Side BR-1310/T-1550SFP-155-25-2$240.00
  • Single fiber (bi-directional) SFP transceivers must always be paired, side A and side B

*Lead times are estimates and may vary. You will be contacted within 1 business day to go over the details of your order. If you require a specific date, let us know!
*Days = Business Days

WarningWarning: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to