Two-Way Signaling of a Contact Closure Over Fiber

Product Overview

This Bi-Directional Contact Closure Fiber Link system provides two-way transmission of a contact closure signal over 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.

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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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Bi-Directional Contact Closure

Product configurationModeDistanceConnectorFibersPart numberPrice
Multimode, ST, 2km/1.2 miles, Dual FiberMultimode2km/1.2 milesSTDual Fiber1CD-IO-03-1$310.00
Singlemode, ST, 15km/9 miles, Dual FiberSinglemode15km/9 milesSTDual Fiber1CD-IO-20-1$410.00
Singlemode, ST, 48km/29 miles, Dual FiberSinglemode48km/29 milesSTDual Fiber1CD-IO-21-1$510.00
  • A complete system requires two devices with the same part number

*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