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8 Port Dry Contact to Optical Fiber Converter

View : 329
Type : Dry Contact Closure over Fiber
Description :

The device provides 8 channels of unidirectional digital signals or 4 channels of bidirectional digital signals for transmission over optical fiber.


The device provides 8 channels of unidirectional digital signals or 4 channels of bidirectional digital signals for transmission over optical fiber. This product addresses the challenges of electromagnetic interference, ground loop interference, and lightning damage, thereby improving the reliability, security, and confidentiality of data communication. It can be widely used in various industrial control, process control, and traffic control applications, particularly suitable for departments and systems in banking, power, and environments with special requirements regarding electromagnetic interference.


It can support 8 channels of unidirectional digital inputs and 4 channels of bidirectional digital inputs.

Each channel has indicator lights to indicate the open and closed states of the digital inputs.

The digital inputs are automatically detected, and the output state of the digital outputs matches the input state, making it convenient for engineering applications.

The digital output supports the capability to switch contacts with a capacity of 250VAC 10A/125VAC 15A.

The digital inputs maintain a stable switch state when powered on or when the fiber optic is not connected, ensuring there are no erratic or unintended switch actions.

The digital input interface is designed to withstand lightning strikes according to the IEC61000-4-5 standard, with differential mode protection up to 6KV (impedance: 40Ω) and common mode protection up to 6KV (impedance: 40Ω).

It supports a wide range of AC/DC inputs from 9V to 70V, with internal isolation and redundant dual power supply inputs. The power supply has overload protection and reverse connection protection.

It meets the requirements of industrial EMC (electromagnetic compatibility) level 4, providing strong lightning protection, high-voltage induction resistance, and surge protection.

It has a fanless design for efficient heat dissipation, reducing maintenance time.

It has an IP40 enclosure protection rating, capable of withstanding harsh environmental conditions.

It can be installed on a DIN rail or wall-mounted.

Operating from -40°C to +85°C.

All models have undergone 100% burn-in testing and come with a 5-year warranty.


● Fiber Port

Fiber Ports: 1

Fiber Type: single-fiber dual-fiber

Fiber Interfaces: SC/FC/ST/LC (SFP)

Wavelength: 850nm/1310nm for multi-mode; 1310nm/1550nm for single-mode

Non-relay Transmission Distance: 0 to 80Km

Typical Transmit Power: Single-mode 100μW – 0.93mW


● Digital Input/Output Interface

Output Interface Type:

Dry contact: Power relay dry contact output

Response Time: Dry contact output: <1.5ms

Contact Switching: Dry contact output: 250VAC 10A/125VAC 15A

Maximum Switching Frequency: 50Hz

Contact Life: 1×10⁵ times (10A 250VAC)

Physical Interface: 5.08mm pitch plug-in terminal


● Environmental Indicators

Operating Temperature: -40°C to +85°C

Storage Temperature: -40°C to +85°C

Operating Humidity: 0% to 95% (non-condensing)

MTBF: >100,000 hours


Product Model


Function Description

Support 250V 10A output 8 ch dry contact optical measuring terminal

Port Description

8 ch dry contact interface interface; 1 Optical fiber port

Power Supply

Redundant dual power input DC9-70V/AC7-55V, power consumption <5W

Overload protection: Support; Reverse protection: Support; Redundancy protection: Supported

Access terminal: 4-core 5.08mm pitch insert terminal

Product Size

Shell: IP40 protection grade, aluminum alloy material

Size: 133mm(L) x 120mm(W) x 50.0mm(H)

Installation method: Din rail mount, wall-mounted


0.7Kg / PCS


application of dry contact to fiber


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