Transmit a Contact Closure Over a Single Fiber

Product Overview

This Contact Closure Fiber Link system provides transmission of the contact closure signal over one optical fiber. Applications include alarm event triggering, building automation, environmental control systems, fire & alarm systems, gate control, traffic signal control equipment, and more.

This contact closure system is designed to operate over an extreme temperature range, providing reliability in non-temperature controlled environments. Accepts a wide power input rage of 12 through 48 volts DC allowing for flexibility in installation.

View User Guide


Lead Time: 1 to 2 Weeks*

E-Commerce is currently only available with delivery to the US and Canada. For all other areas, please use the link below to contact our international sales group.

Request a Quote


Contact Closure

Product configurationTransmitter/ReceiverModeConnectorDistanceFibersPart numberPrice
Transmitter, Multimode, ST, 2km/1.2 miles, Single FiberTransmitterMultimodeST2km/1.2 milesSingle Fiber1CD-03-1$260.00
Receiver, Multimode, ST, Single FiberReceiverMultimodeST2km/1.2 milesSingle Fiber1CD-04-1$260.00
Transmitter, Singlemode, ST, 15km/9mi, Single FiberTransmitterSinglemodeST15km/9 milesSingle Fiber1CD-20-1$360.00
Transmitter, Singlemode, ST, 48km/29mi, Single FiberTransmitterSinglemodeST48km/29 milesSingle Fiber1CD-21-1$460.00
Receiver, Singlemode, ST, Single FiberReceiverSinglemodeST15km/9 miles & 48km/29 milesSingle Fiber1CD-22-1$360.00
  • A complete system requires a Transmitter and a Receiver
  • Singlemode receiver is compatible with all singlemode transmitters
  • When a fiber splitter is used, multiple receivers can be paired with one transmitter

*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