Wireless Optical Communication System
Models: 1 Gbps | 10 Gbps

KORUZA Pro Right Side

Quick Start Guide


Thank you for using / purchasing KORUZA Pro wireless optical communication system . This Quick Start Guide is designed to guide you through installation and setup process of KORUZA Pro. It assumes the reader has a basic understanding of how to install and operate networking equipment.

KORUZA Pro is an open product and you can find additional documentation in the following resources. Reading them is not required for use of this product.

In case you need additional support or assistance you can get in contact via email support@koruza.net.

KORUZA Pro Overview

KORUZA Pro is a wireless optical internet access system, empowering an instant optical network roll-out in high-density urban networks with minimal infrastructure investment and versatile installation options. It is low-maintenance and it operates an active link protection, ensuring long-term interference-free operation.

Data is securely transmitted point-to-point over a collimated beam of light at 1 Gbps or 10 Gbps throughput at distances up to 150 m using eye-safe and to human eye invisible infrared light beam.

KORUZA Pro IoT provides a robust solution for wireless optical connectivity for sensors and device to device communication for industrial applications. Low-speed 1-10 MBps design enables transport of the majority of sensor measurements in real-time in applications ranging from KORUZA Pro to KORUZA Pro units for management purposes, stand-alone as a sensor networking unit between a stationary base station and a system moving at speed along a straight linear rail, for example on a crane or roller coaster. The multi-protocol interface allows one to extend standard I2C, SPI or UART communication protocols as well as use an ethernet interface in a standard communication setup.

Use/Application Examples

KORUZA Pro is used with advantage for:

  • Point-to-point bridging
  • Increasing the capacity of existing wired and wireless networks
  • Expanding the reach of FTTH
  • Last-mile mesh networking
  • Cell base-station uplinking
  • Campus connectivity simplified
  • Rapid response networking

Two typical system application setups description:


Description with the corresponding diagrams coming soon.


Description with the corresponding diagrams coming soon.

Product Description

Hardware Overview

KORUZA Pro Explosion Scheme

System Description

KORUZA Pro Working Diagram

KORUZA Pro Working Diagram

KORUZA Pro Network Diagram

KORUZA Pro Network Diagram


MODEL Bridge 1 Gbps Bridge 10 Gbps
Status Available, Pre-order Available, Pre-order
Network port SFP cage – data, 100 Mbps ethernet – management
Power supply requirements 24 V (12 V-30 V) 0.5 A (PoE 802.3af mode B)
Average power consumption 6 W
Outdoor enclosure (material) Anodized aluminium
Mounting Vertical/horizontal pole up to diameter 60 mm
Weight Approximately 2 kg
Dimensions 180 mm × 120 mm × 120 mm
Manual beam alignment accuracy 1 mrad
Motorized beam alignment accuracy 0.003 mrad
Optical source and detector SC SFP WDM Bi-Di module with DDM
Wavelength Matched pair at 1330 nm/1550 nm Matched pair at 1270 nm/1310 nm
Transmitter power 0 dBm 0.5 dBm
Receiver sensitivity -23 dBm -15 dBm
Bandwidth 1 Gbps 10 Gbps
Laser power < 1 mW
Beam divergence 0.05 mrad
Aperture 50 mm NBK7 Plano-convex lens
Receiver field-of-view 10 mrad
Laser class 1M (eye safe)
Routing platform Not integrated
Management interface http, snmp, custom protocols (built-in Linux Raspberry Pi Compute module system)
Auto-tracking Yes, requiring management link
Management IR link Under development
Data processing None via SFP port, Layer 1 system
Annual optical link availability 99%
Operating temperature -40 °C to 60 °C
Humidity Undetermined
Outdoor rating IP65
Distance < 150 m, or greater with limited reliability
Clear day (10 km+ visibility) 0 dB
Moderate fog (500 m visibility) 1 dB
Dense fog (100 m visibility) 4 dB
Very dense fog (50 m visibility) 10 dB

Installation Guide

Installation Requirements

  • Confirm clear line of sight between KORUZA units - ensure no obstacles are on the way, consider trees, construction of new buildings, etc.
  • Confirm the installation locations for two units are at the distance not less than 20 m and up to 150 m apart.
  • Confirm stable and vibration-free mounting location.
  • Confirm all the required cable routes are available.
  • Choose mounting location such that operation integrity is ensured - near roof edge or similar to avoid interruptions of transmission and whenever possible choose a weather protected location
  • Ensure safety compliance: Ensure that appropriate warning signs are properly placed and posted at the equipment site or access entry. For a complete list of warnings, refer the Safety section at the end of this guide.
  • Ensure compliance with laws, regulations, codes (electrical, building, fire codes and similar), and agreements.

Installation Summary

  1. Install the mount.
  2. Power up the unit.
  3. Connect smartphone or computer to unit’s WiFi.
  4. Coarsely aim the units and tighten screws.
  5. Connect to your management interface and click on the image where the opposite unit is.
  6. Management IR link established. - This feature available soon.
  7. Use arrow keys to align the units. (Soon auto alignment will be available and thus replacing this step with Auto-alignment and tracking.)

Package Contents

  • Koruza Pro - 2 units
  • Mount - 2 pieces
  • PoE Power Supply
  • PoE Power Cable (country specific)
  • USB Wifi Modul

KORUZA Package Contents

Additionally needed for installation

  • SFP Module

KORUZA Additionally needed for installation

Additionally needed if you are mounting KORUZA on the wall

  • 4 screws 13 mm
  • 4 wall plugs 13 mm


For the installation of KORUZA Pro units the following tools are required:

  • 13 mm Wrench
  • 2.5 mm Hex Key
  • 4 mm Hex Key


Pre-prepare the units for installation

Cable opening

Step 1: Connect the WiFi USB to KORUZA Pro unit - to USB port (1).

Step 2: Connect the SFP module to KORUZA unit - to SFP port data (2).

Now, KORUZA Pro unit is ready for the installation.

Unit Installation

KORUZA Pro unit can be mounted in several ways. Here, we show the three common options:

  • vertical pole
  • horizontal pole
  • wall

The preferred pole diameter is 40 mm but the bracket has been designed to fit any standard pole with a diameter between 30 mm and 50 mm. The pole used should ideally be a short pole, not longer than 500 mm, unless firmly mounted on both ends and securely bolted to a fixed structure to avoid unstable operation also under high winds and other bad weather conditions. If in doubt about your installation location, please get in contact with support@koruza.net.

Mount up on a vertical pole

Step 1: Insert the U-Bolt into the pole clamp and dish bracket.

Step 2: Secure each end of the U-Bolt with a washer and a nut.

Step 3: Tighten until the spring washer is well compressed.

Vertical Mount


Mount up on a horizontal pole

Step 1: Remove the jaws.

Step 2: Install the jaws vertically. (Rotate the jaws for 90 degrees.)

Step 3: Insert the U-Bolt into the pole clamp and dish bracket.

Step 4: Secure each end of the U-Bolt with a washer and a nut.

Step 5: Tighten until the spring washer is well compressed.

Step 4 Horizontal Mount


Mount up on a wall

Step 1: Remove the jaws from the mounting bracket.

Step 1 Wall Mount

Step 2: Attach to the wall using screws and wall plugs. You will need 4 screws 13 mm and 4 wall plugs 13 mm.

Step 2 Wall Mount

Step 4: Put KORUZA Pro on the mounting pole with the unit’s opening facing you.

Step 5: Connect management and power cable (1).

Step 6: Connect data cable /fiber to SFP modul (2).

Step 7: Insert cables in the gasket.

Step 5 &amp; 6  &amp; 7

Step 8: Confirm that the unit is turned on by checking that LEDs (at MGMT and data port) inside the unit are on.

Step 9: Close the lid.

Step 8

Step 10: Connect your computer or smartphone to KORUZA network. The default password is koruzakoruza.

Step 11: Visit Login information – username: root, password: raspberry.

Step 11

Step 12: Watch the webcam image and point Koruza towards the other unit so you are within cca 1 m. You need to see KORUZA on the screen.

Step 12

Step 13: Take a note of the IP address of the unit from the web interface. You will need it later.

Step 14: Tighten the two screws at the back of the mounting.

Step 15: Tighten the upper screw.

Step 14 &amp; 15

Repeat the same process on the other unit.

Units Alignment and Link Establishment

Step 1: Connect to your management interface so you can access both units. You need to know the IP of your both units. (You made a note of it in the Step 13 of the previous section of the installation process.)

Note: It may be beneficial to have both interfaces located one next to the other for the ease of calibration process.


Once you access the interface you should see the camera view and additional data about each unit. The RX Power field indicates received power on the unit and should be used as a main guide during alignment procedure. Keep in mind that that movement of the unit has greater impact on the received power of the opposite unit than on the received power of unit being moved.


If performing alignment in low visibility, LED lights can be turned on and off with LEDs button. Lights are turned ON by default.

Above camera view you can choose between different movement modes. During alignment, mode None should be selected.

Step 2: Use the arrow keys, located near the edges of camera view, to align the KORUZA units. First, aim the center of the red square to the center of the unit to establish the link.

Note: You can choose magnitude of single movement, by selecting Steps option above the camera view. During the coarse alignment Steps 1000 is usually the optimal option.

You can see colour trace on appearing on the screen when unit is moved, indicating signal strength (red - optimal, yelow - weak). You can turn trace on and off under Survey options Toggle visibility. You can reset it by selecting Reset.

Note: You can monitor steps under MotorX and MotorY fields. If at any stage you cannot move in a certain direction, first refresh your interface. If the problem persist Click Homing button, and wait for motors to move to the neutral position.

Step 3: Link is established when the RX Power is greater than – 25 dBm on both units.

Step 4: Now, use the arrow keys to achieve the maximum receive power on the units. For 50 m link distance this is approximately 3 - 6 dBm, for 100 m approximately 6 - 8 dBm and for 150 m approximately 8 - 10 dBm.

Note: Keep in mind that optimal position might not be when red square and the unit overlap.

A viable approach to finding optimal position:

(a) Try moving one of the units, say UNIT 1, left and right and stop at the position where most signal is received on the opposite unit, say UNIT 2. Try with Steps: 100.

(b) Once optimal position is located, move the same unit up and down and again stop at the position where most signal is received on the opposite unit.

© Repeat steps a and b on the opposite UNIT 2, now monitoring relieved signal on the UNIT 1.

Repeat steps a, b and c until optimal signal is received on both units, reducing the steps magnitude in the process. Usually Steps 100 can be used on links up to 50 m and Steps 10 should provide sufficient accuracy for longer links.

(Note: This step will be replaced by auto alignment functionality - a feature available soon.)

After installation check list

  1. Check that all the mounted parts are tight (poles, screws, nuts …).
  2. Check all cabling is protected from strong winds, retighten or tighten additionally if necessary.
  3. Check all connector and other sealments are tight.
  4. Check alignment.
  5. Check signal strength on both ends.
  6. Check all visible parts for any possible damages that may have occurred during installation.

Software - KORUZA Pro Controller Interface

Documentation on Koruza Pro Controller Interface will be available soon.


Here you can expect Troubleshooting flowcharts to help you troubleshoot in case of failures caused by system, attached network components or environment.


General maintenance of KORUZA Pro units is minimal, and is somewhat dependent upon the environment under which the units operate. For dustier environments such as cities and industrial sites it is important to keep the front lenses clean, as a dirty front can compromise the performance of the link. Check the units annually or upon significant signal degradation.

The front lenses of KORUZA Pro should be wiped with a clean, damp lint-free cloth at periodic intervals. For clean environments performing this once a year should be sufficient, but were dust or sea salt deposits are likely this should be performed more frequently.

The KORUZA monitoring platform will give you automatic updates on link performance and will notify you in case KORUZA units require your attention.

Do not attempt to open the housing yourself, as there are no user-serviceable parts inside. In case you need assistance, contact support@koruza.net for support.


The equipment is safe if properly operated in accordance with this manual.

This equipment is in the process of testing to confirm it complies with all regulatory statutes and limitations including:

  • IEC 60825-1:2014 (laser safety),
  • IEC 60950-1:2005+AMD1:2009+AMD2:2013 (electrical safety),
  • EN 55024:2010, EN 55022:2010 Class 1М (emission)
    The laser radiation is emitted from the apertures in the front side of the units. Laser radiation cannot go through the other apertures.
  • RoHS Directive 2002/95/EC (electronic waste, restriction of the use of hazardous substances in electrical and electronic equipment ) and applicable standards
  • WEEE Directive 2002/96/EC (collection and recycling of electronic equipment)
  • Directive 2006/25/EC (artificial optical radiation) and applicable standards

Caution: This product utilizes a Class 1M laser which has been determined to be ‘eye safe’ (according to international standard IEC EN 60825-1:2014). It may be installed in unrestricted, restricted or controlled locations. For additional details, please refer to IEC 60825-1:2014: SAFETY OF LASER PRODUCTS.

Unrestricted locations are those areas that are normally accessible to the public (e.g., unrestricted areas of rooftops, public areas at ground level, open areas of offices and industrial premises, etc.). To install a KORUZA Pro in an unrestricted location, the link head must be installed 3 meters high or higher above the surface of the unrestricted area or must be 1 meter or closer to the edge of the unrestricted area. If a KORUZA Pro is installed in an unrestricted area, a warning sticker must be placed on the unit “Do not use binoculars, telescopes or other optical aids to view the FSO link heads.”

Restricted locations are those areas that are normally inaccessible by the general public (including workers, visitors, and residents in the immediate vicinity) by means of any administrative or engineering control measure but that is accessible to authorized personnel (e.g. maintenance or service personnel including window cleaners in exterior locations) that may not have laser safety training. There are no special requirements for a KORUZA Pro installed in a restricted area.

Controlled locations are those locations where any kind of engineering or administrative control measure is introduced to make it inaccessible except to authorized personnel with appropriate laser safety training (e.g., tower-mounted terminals, fenced/secure areas of rooftops, locked rooms with strictly-controlled access, etc.). There are no special requirements for a KORUZA Pro installed in a controlled area.

Warning: Do not look directly into the laser aperture from a short distance. Never use any optical instruments to view the laser beam.

Caution: Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

Proper Disposal

This product should be disposed of separately from regular household waste streams. It is your responsibility to dispose of this and other electric and electronic equipment via designated collection facilities appointed by the government or local authorities. Improper disposal may contaminate the environment and present a health risk due to the release of hazardous substances contained within. Correct disposal and recycling will help prevent potential negative consequences to the environment and human health and lessen the demand on natural resources. We encourage you to use the appropriate recycling systems for disposal. Please contact us if you require more information on the proper disposal of this equipment.



FABRIKOR, LTD (the “Seller”) is the Seller of custom manufactured engineering prototypes , including the KORUZA Pro Technology Preview Engineering Prototype (the “Prototype”). The receiver/purchaser (the “Purchaser”) has ordered the Prototype from the Seller. By purchasing the Prototype, the Purchaser agrees to be bound by the terms of this Waiver.

In case the Prototype is sold to the Purchaser in a set of components, it requires assembly, calibration and modification of the Prototype by the Purchaser to perform its functions. By purchasing, receiving or using the Prototype the Purchaser accepts the entire risk as to the use, quality, and performance of the Prototype. This disclaimer of warranty and limitation of liability is an essential part of the contract of sale and of any transfer of ownership.

The Purchaser agrees that should it use any open source software provided by the Seller under an Open Source License then the provisions of license including any disclaimers shall apply to its use of the software and no liability in respect of use of the software shall arise from Purchaser’s purchase of the Prototype.

Disclaimer of Warranties

Unless otherwise separately undertaken by the Seller, to the extent possible, the Seller offers the Prototype as-is and as-available, and makes no representations or warranties of any kind concerning the Prototype, whether express, implied, statutory, or other. This includes, without limitation, warranties of title, merchantability, fitness for a particular purpose, non-infringement, absence of latent or other defects, accuracy, or the presence or absence of errors, whether or not known or discoverable. In addition, the Seller does not warrant that the operation of the Prototype will be error-free or that operation will be uninterrupted.

In response to a request from the Purchaser the Seller in its unfettered discretion may chose to replace a part or parts or refund some or all of the purchase price paid for a Prototype. There is no obligation on the Seller to do so. The Purchaser agrees that replacement of a part or offer of a partial or complete refund in no way establishes liability on the part of the Seller.

The Seller does warrant that the Prototypes will arrive undamaged and made in accordance to the Prototype specifications when received by Purchaser. In the event that the Prototypes are damaged upon receipt, Purchaser shall notify the Seller and ship the damaged Prototypes back to the Seller within ninety days of initial delivery to the Purchaser. The Purchaser shall bear the costs of shipping the Prototypes back to the Seller.

When the Seller receives a returned Prototype within ninety days of the initial delivery to the Purchaser the Seller may in its sole unfettered discretion, send either a replacement Prototype or a refund, This Warranty shall be effective for returns received within ninety days of the initial delivery of the Prototype. The Seller will not accept a return for any other reason.
Where disclaimers of warranties are not allowed in full or in part, this disclaimer may not apply to all Purchasers.

Release of Liability & Limitation of Liability

Purchaser acknowledges that the Prototypes are of a prototype nature, have not been subject to rigorous testing and are subject to changes, including but not limited to, formulation, claims, physical properties, availability, pricing, packaging, etc.

Purchaser further acknowledges that the use of the Prototypes could result in damage of Purchaser’s equipment/parts/material/process. Improper use of Prototypes beyond Seller’s recommendations could result in health hazard and/or injury.

To the extent possible, in no event will the Seller be liable to the Purchaser on any legal theory (including, without limitation, negligence) or otherwise for any direct, special, indirect, incidental, consequential, punitive, exemplary, or other losses, costs, expenses, or damages arising out of sale, receipt or use of the Prototype, even if the Seller has been advised of the possibility of such losses, costs, expenses, or damages.

In no event shall the Seller be responsible for damages or claims of any nature or description relating to system performance, including coverage, Purchaser’s selection of the Prototype for Purchaser’s application and/or failure of the Prototype to meet government or regulatory requirements.

In no event shall Seller’s liability under this Waiver exceed the purchase price paid by Purchaser to the Seller for the Prototypes.
Where a limitation of liability is not allowed in full or in part, this limitation may not apply to all Purchasers.


The disclaimer of warranties and limitation of liability provided above shall be interpreted in a manner that, to the extent possible, most closely approximates an absolute disclaimer and waiver of all liability
The unenforceability of any portion of this Waiver shall not render the remainder of the Waiver invalid or unenforceable.


Purchaser will be deemed to have accepted this Waiver by purchasing the Prototypes designated as “Engineering Prototype” and/or whose description includes a link to this waiver and states that purchase constitutes acceptance. The Seller will in its sole discretion further require Purchaser to sign a copy of this waiver when deemed necessary.


KORUZA Pro is licensed under open source licenses. Hardware including documentation is licensed under [CERN OHL v.1.2. license](https://www.ohwr.org/licenses/cern-ohl/license_versions/v1.2). Firmware and software originating from the project is licensed under [GNU GENERAL PUBLIC LICENSE v3](https://www.gnu.org/licenses/gpl-3.0.en.html). Open data generated by KORUZA Pro is licensed under [CC0](https://creativecommons.org/publicdomain/zero/1.0/). KORUZA Pro websites and additional documentation are licensed under [Creative Commons Attribution-ShareAlike 4 .0 Unported License](https://creativecommons.org/licenses/by-sa/4.0/legalcode). What this means is that you can use hardware, firmware, software and documentation without paying a royalty and knowing that you'll be able to use your version forever. You are also free to make changes but if you share these changes then you have to do so on the same conditions that you enjoy. KORUZA, KORUZA Pro and IRNAS are all names and marks of Institute IRNAS Rače. You may use these names and terms only to attribute the appropriate entity as required by the Open Licence referred to above. You may not use them in any other way and in particular you may not use them to imply endorsement or authorization of any hardware that you design, make or sell.