KERLINK KLK915WIFC LoRa gateway for IoT chain User Manual
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User Manual 
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User Manual of Wirnet iFemtoCell 
1 Normal conditions of use 
The  Wirnet  iFemtoCell  is  an  indoor  LoRa  Nano  Gateway  for  IoT  chain.  It  is  based  on  LoRa®  technology  provided  by  Semtech  Company,  it  is 
compatible and interoperable with existing LoRa LPWAN. 
The Wirnet iFemtoCell is declined into three versions to cover different countries and areas around the world: 
  Wirnet iFemtoCell 868MHz  Wirnet iFemtoCell  915MHz  Wirnet iFemtoCell 923MHz 
Geographical area 
Europe, Russia 
Africa 
Middle East, India 
North America 
Central America 
South America with the exception 
of Brazil 
Asia: Indonesia, Malaysia, Korea, Japan, 
Taiwan, Hong Kong, Thailand, Vietnam, 
Papua New Guinea, Singapore, Philippines 
Oceania: Australia, New Zealand 
Brazil 
ISM band  863 - 876 MHz  902 - 928 MHz  915 - 928 MHz 
Downstream bandwidth 
(Tx of the Wirnet iFemtoCell)  863 - 873MHz  902 - 928 MHz  915 - 928 MHz 
Upstream bandwidth 
(Rx of the Wirnet iFemtoCell)  863 - 873 MHz  902 - 928 MHz  915 - 928 MHz 
Certifications  EN 300 220 
FCC and IC 
CB scheme for: Mexico, 
Argentina, Chile, Bolivia, 
Colombia, Venezuela, Uruguay, 
Peru, Ecuador 
FCC and EN 300 220 
CB scheme for: Japan, Korea, Australia, 
Singapore, Indonesia, New-Zealand, Brazil 
Please check the appropriate version for the dedicated country. Contact your reseller if required. 
The present document addresses all the above Wirnet iFemtoCell versions. 
2 Description of features 
Here are the main functionalities of the Wirnet iFemtoCell: 
 LongRange support: 
o Incorporate LoRa (TM) bidirectional communications technology: 
 868MHz version  RX: 863- 873MHz , TX: 863-873MHz (according to HW capabilities) 
 915MHz version  902-928 MHz ISM band-hybrid mode (according to HW capabilities) 
 923MHz version  RX: 915-928 MHz, TX: 915-928MHz (according to HW capabilities) 
o 49 LoRa demodulators over 9 channels + 1 x GFSK 
 Embedded, remote and open low power communication station 
 Open development framework based on standard Linux OS 
 Internet connectivity over Wi-Fi, Ethernet or 3G/4G (with optional USB dongle) 
 USB host interface allowing local software upgrade with USB mass-storage key 
3 Safety 
3.1 Warnings in this manual 
Warnings provide important safety informations. 
Warnings must be read before any action is taken that poses risks to persons or equipment. 
 Refers to a critical situation. 
In case of non-compliance, it may result in property damage. 
Refers to useful information during manipulations. 
3.2 Safety instructions 
Please read this user manual carefully. 
It is an integral part of the described equipment and it must be available at all times. 
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• Only use the Wirnet iFemtoCell for its intended use, see chapter 1 "Normal conditions of use". 
• Only use the Wirnet iFemtoCell in the normal operating conditions described in chapter 10 "Technical characteristics". 
• Maintenance and repair must be carried out by qualified personnel authorized by the manufacturer. 
• The enclosure of the Wirnet iFemtoCell must not be opened by customer. 
• The Wirnet iFemtoCell should only be used with accessories or spare parts supplied by your reseller. 
4 Overview of Wirnet iFemtoCell 
Nomenclature:  
N°  Components  N°  Components 
1  Wirnet iFemtoCell  9  SMA connector for LoRa antenna 
2  Silkscreened KERLINK marking  10  Silkscreened Wi-Fi (WPS) marking 
3  Jack connector (for power supply)  11  Wi-Fi (WPS) push button 
4  USB connector  12  Silkscreened Reset marking 
5  RJ45 connector (Ethernet)  13  Reset push button 
6  3 bicolor LEDs  14  LoRa antenna (862-873MHz , 902-928MHZ, 
3dBi, 50Ω; vertical polarization)
7  Wall mounting  oblong holes  15  AC power supply 
8  Sticker with markings  16  User manual (this document) 
5 Markings 
5.1 Markings on sticker 
Symbol Description  Symbol Description 
Wirnet iFemtoCell  Type of equipment 
QR code 
 Power supply informations   or 
other marking 
CE marking indicating that the product complies with current 
European directives, or other marking depending on the country 
Board ID  Serial number of board 
Marking indicating that the product complies with RoHS directives 
Final product ID  Serial number of product 
Do not dispose of with domestic waste 
MAC ADDR  MAC address 
Product must be installed on a non-flammable substrate (UL 94V0) 
Refer to the installation instructions before powering up 
(EU version used here as example - 
non contractual view) 
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5.2 Markings on packaging 
Symbol Description  Symbol Description 
Wirnet iFemtoCell  Type of equipment 
QR code 
Final product ID  Serial number of product   or 
other marking 
CE marking indicating that the product complies with current 
European directives, or other marking depending on the country 
Packaging ID  Identifier of packaging 
Marking indicating that the product complies with RoHS directives 
Software version  Version of embedded software 
Do not dispose of with domestic waste 
MAC ADDR  MAC address 
Product must be installed on a non-flammable substrate (UL 94V0) 
Refer to the installation instructions before powering up 
6 Installation of Wirnet iFemtoCell 
6.1 Mounting of the enclosure 
 The  Wirnet  iFemtoCell  enclosure  must  be  mounted  on  any  concrete  pedestal, 
concrete wall or any non-flammable surface (UL94-V0). 
It must not be mounted on a flammable surface. 
The Wirnet iFemtoCell may be mounted on a wall using the two oblong holes. 
Only two screws (not included) are needed, all mounting informations are mentioned on the following drawing: 
6.2 Setting connections 
 Before setting all connections, ensure that the power supply is not connected to the 
mains supply. 
When the Wirnet iFemtoCell is installed, three configurations are possible regarding the technology used to access Internet: 
 Ethernet connection, requiring an Ethernet access through a dedicated RJ45 cable 
 Wi-Fi connection, requiring a Wi-Fi access point 
 3G/4G connection via USB dongle (optional) and an USIM subscription (not included) 
The three configurations may be used in parallel. A typical example is the possibility to insure Ethernet backup by a 3G/4G link.  
The required connections needed to operate the Wirnet iFemtoCell are listed below (see chapter 4 “Overview” for details of connectors): 
 Power supply 
 Ethernet cable (not included) 
 LoRa antenna 
 USB mass-storage key (not included) 
 3G/4G USB dongle (optional) and an USIM subscription (not included) 
The Ethernet cable is not provided and must consist of two RJ45 T 568A (or 568B) plugs on each side. 
KERLINK recommends using a cable with the following characteristics: 
• Category: 6A 
• Shielding: STP (U/FTP) or SSTP (S/FTP)  
• Section conductors: AWG26  
• External jacket: LSZH or PUR 
• Maximum length: 100 meters 
• Operating temperature range:-20°C to +55°C 
In case of 3G/4G connection with USB dongle: 
• KERLINK  recommends using a validated USB  dongle (contact your  reseller  to  have  the  list  of  validated  USB  dongles). 
Alternative dongle may require additional drivers and firmware update to be used. 
• To optimize the radio performances, when possible, KERLINK strongly recommends dissociating the 3G/4G USB dongle 
away from the enclosure and the LoRa antenna by using a 1 meter extension cable. 
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6.3 Power ON 
Once the LoRa RF antenna, the Ethernet cable (if used) or the optional 3G/4G USB dongle (with USIM card inserted) and the power supply jack 
connector are connected, the Wirnet iFemtoCell can be powered ON by connecting the power supply onto the 230VAC mains supply. 
The power supply is provided with E/F type cable (Europe) or B type cable (USA). 
6.4 First connection 
When the Wirnet iFemtoCell is installed, the first connection can be done by two different ways:  
 Using Wi-Fi connection: 
o Press the WPS button (Wi-Fi Protected Setup) on the Wirnet iFemtoCell (see chapter 4 “Overview”) then press the WPS button on the Wi-Fi 
access point of the installation 
o The connection will be established automatically 
 Using Ethernet connection: 
o Plug the Wirnet iFemtoCell to your box or internet router with an Ethernet cable 
o The connection will be established automatically 
6.5 Functional check 
To ensure the Wirnet iFemtoCell is started up, check the behavior of the LED indicators: 
LED
Specification 
LED 1: Power  RED blinking during the kernel boot 
GREEN blinking during system boot 
GREEN when boot is finished 
LED 2: Backhaul  RED during boot 
If the applicative software provided by KERLINK is installed: 
• RED if applicative software is disconnected 
• GREEN blinking during applicative software connection 
• GREEN fix if applicative software is connected 
LED 3: LoRa traffic  RED during boot 
If the applicative software provided by KERLINK is installed: 
• Applicative software management 
• Rx: GREEN blinking 
• Tx: RED blinking 
 Applicative software stands for embedded software running on the Wirnet iFemtoCell like KERLINK Small Private Network 
or another Packet Forwarder (software that forwards RF packets received to a server and emits RF packets that are sent by 
the server). 
 Please contact your reseller to know the LEDs behavior if the applicative software installed on the Wirnet iFemtoCell is not 
the one officially provided by KERLINK. 
6.6 Configuration 
Once the connection is established (Ethernet or Wi-Fi), a Web configuration interface is accessible from the Wirnet iFemtoCell. 
This Web interface is accessible on any IP address that has been allocated by the network. 
You first have to get the IP address that has been allocated to the Wirnet iFemtoCell 
by DHCP on either Ethernet or Wi-Fi and then point your Web  browser to it. You 
can  find  this  information  from  your  Wi-Fi/Ethernet  router  on  its  administration 
interface. 
For example: 
http://192.168.1.13/ 
The login credentials are “admin” for user and “admin” for password. 
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The Web interface allows to configure the following items: 
 Ethernet setup (frame 1): 
o IPV4 configuration: manual or automatic (DHCP) 
o In case of manual configuration: 
 Address 
 Netmask 
 Gateway 
 Wi-Fi setup (frame 2): 
o Network name 
o Password 
o IPV4 configuration: manual or automatic (DHCP) 
o In case of manual configuration: 
 Address 
 Netmask 
 Gateway 
The Web interface allows to get some status (frame 3): 
 Hardware status: 
o CPU used 
o RAM used 
o System disk used 
o User disk used 
 Software versions: 
o Linux 
o Firmware 
7 Problems 
Problem  Cause  How to fix? 
The LEDs never turn on  The Wirnet iFemtoCell is not well powered 
• Check  the  position/good  connection  of  the  power  supply 
jack connector 
• Check  that  the  power  supply  is  properly  connected  to  the 
mains supply 
No LoRa data received  The LoRa antenna is not well connected 
• Check  that  a  LoRa  endpoint  is  within  range  of  the  Wirnet 
iFemtoCell 
• Check the tightening of the LoRa antenna (SMA connector)  
• Check that the LoRa antenna is not deteriorated 
No Internet access  No technology to access Internet is 
activated/available on the Wirnet iFemtoCell 
In case of Ethernet connection: 
• Check  the  position/good  connection  of  the  RJ45  Ethernet 
connector 
• Check that the RJ45 cable is not deteriorated 
In case of Wi-Fi connection: 
• Check  that  the  Wi-Fi  access  point  is  within  range  of  the 
Wirnet iFemtoCell 
In case of 3G/4G connection: 
• Check that the USB dongle is well plugged 
• Check that the USB dongle is well supported by firmware 
In case  of  a problem  that  cannot  be  resolved  immediately from  the  table, contact  your  reseller.  Do  not  use  the  Wirnet  iFemtoCell  to  prevent 
further damage. 
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8 Disposal / Recycling 
Do  not  dispose  of  the  product  with  domestic  waste.  For  proper  disposal,  contact  a  waste  disposal  company.  The  packaging  of  the  product 
(cardboard and liners) can be disposed of with the used paper. 
9 Warranty 
Contact your reseller for warranty conditions of the Wirnet iFemtoCell. 
The Wirnet iFemtoCell is not warranted by KERLINK in case the enclosure is opened by customer for any reason. 
10 Technical characteristics 
Characteristic  Wirnet iFemtoCell 
Enclosure material  PC + ABS 
LED gasket material  Elastomer compound based on styrene-butadiene-styrene (SBS) 
Dimensions L x H x P in mm: 
• Without LoRa antenna 
• With LoRa antenna 
160 x 90 x 35 mm 
220 x 125 x 35 mm 
Weight in g (with AC power supply and LoRa RF antenna)  280g 
Operating temperature range 
Enclosure: -20°C to +55°C 
Power supply: country dependent, please refer to power supply 
itself or contact your reseller 
Power supply output voltage  12 VDC 
Power consumption: 
• CPU module (20% load), Ethernet link ON 
• Wi-Fi (25%Tx,75%Rx) 
• 3G/4G USB dongle (HSPA, 25% Tx, 75% Rx) 
• Radio in Rx mode (x8 demodulator on) 
1.3W max 
0.5W max 
1W max 
1.6W max 
Ingress protection  IP31 / EN 60529 
Humidity  95% non-condensing 
Impact resistance  IK07 
Flammability rating  UL94-V0 
Connectors  1 x SMA or RP-SMA (LoRa antenna) 
1 x jack connector (power supply) 
1 x USB 
1 x RJ45 
11 Declaration of conformity 
11.1 Wirnet iFemtoCell 868MHz 
The Wirnet iFemtoCell 868 complies with requirements listed in the article 3 of the  RED 2014/53/EU directive: 
1. Electromagnetic compatibility (article 3.1-b of the RED Directive) 
Applied standard(s):  EN 301 489-1    issue 1.9.2 
        EN 301 489-3    issue 1.6.1 
        EN 301 489-17    issue 2.2.1 
2. Efficient use of the radio frequency spectrum (article 3.2 of the RED Directive) 
Applied standard(s):  EN 300 328    issue 2.1.1 
        EN 300 220-1    issue 3.1.1 
        EN 300 220-2    issue 3.1.1 
3. Safety (article 3.1-a of the RED Directive) 
Applied standard(s):  EN 60 950-1    Ed. 2006+A11:2009+A1:2010+A12:2011+A2:2013 
4. Magnetic field exposure  
Applied standard(s):  EN 50 385    Ed. 2002 
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The Wirnet iFemtoCell 868 is considered as a category 2 receiver according to the EN 300 220-1. 
The Wirnet iFemtoCell 868 has CE marking. 
In Europe,  the Wirnet  iFemtoCell  868 station  must comply with  the ERC  70-3  requirements  regarding  duty  cycle  and  maximum  EIRP. They  are 
summarized in the following table: 
ERC 70-03 Band  Frequency (MHz)  Power  Duty cycle 
h1.3  863-865  14dBm ERP  0,1% 
h1.3  865-868  14dBm ERP  1% 
h1.4  868-868,6  14dBm ERP  1% 
h1.5  868,7-869,2  14dBm ERP  0,1% 
h1.6  869,4-869,65  27dBm ERP  10% 
h1.7  869,7-870  14dBm ERP  1% 
h2  870-873  14dBm ERP  0,1% 
h2.1  870-873  14dBm ERP  1% 
Annex2/c  870-873  27dBm ERP  2,5% 
The power supply of the Wirnet iFemtoCell 868 must be a limited power source. 
• If the LoRa antenna is changed, the output power must be adjusted to take into account the gain of the antenna to not 
overrule the ERC 70-3 regulation. 
• Be careful, some countries in Europe may have specific frequency  range,  EIRP and duty cycles regulations. Check the 
local regulations before installing and commissioning the Wirnet iFemtoCell 868. 
• For other countries, outside Europe, check the frequency range, the maximum EIRP and duty cycle allowed. 
11.2 Wirnet iFemtoCell 915MHz 
The Wirnet iFemtoCell 915  complies to: 
 IEC 60950-1:2005/A1:2009/A2:2013 
 UL 60950 -1 : 2007, Amendment A1:2011, Amendment A2:2014 
 CAN/CSA-C22.2 NO. 60950-1-07 / A1: 2011 / A2: 2014 
The Wirnet iFemtoCell 915 complies to both FCC and IC regulations. 
Applicable documents: 
 CFR 47 FCC Part 15: 
o FCC 47 CFR Part 15 : 2016 - Part 15- Radio frequency devices 
o FCC PART 15.247 -  Operation within the bands 902–928 MHz, 2400–2483.5  MHz, and 5725–5850 MHz (frequency hopping and digitally 
modulated) 
 FCC Part 15.207 conducted emissions on AC mains in the band 150kHz – 30MHz 
 FCC Part 15.247 intentional radiated emissions 
 FCC Part 15.215 Additional provisions to the general radiated emissions limitations 
 RSS 247: 
o RSP-100 Issue 11, January 2016 - Certification of Radio Apparatus 
o RSS-Gen – Issue 4, November 2014- General requirements and Information for the Certification of radio Apparatus 
o RSS-247  Issue  1,  May  2015  -  Digital  Transmission  Systems  (DTSS),  Frequency  Hopping  Systems  (FHSS)  and  License-Exempt  Local  Area 
Network (LE-LAN) Devices 
The associated FCC and IC identifiers of the Wirnet iFemtoCell 915 are: 
Model: Wirnet iFemtoCell 915 
FCC ID: 2AFYS-KLK915WIFC 
IC: 20637-KLK915WIFC 
 The power supply of the Wirnet iFemtoCell 915 must be a limited power source. 
 Any changes or modifications to this equipment not expressly by Kerlink may cause, interference and void the FCC 
authorization to operate this equipment. 
 This device complies with Industry Canada’s license-exempt RSSs. 
Operation is subject to the following two conditions: 
1. This device may not cause harmful interference, and 
2. This device must accept any interference received, including interference that may cause undesired operation of 
the device. 
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 • Some conditions have to be respected to maintain the FCC and IC compliance of the devices in USA and Canada. Please 
contact your reseller to have details. 
• For others countries, check the specific regulations regarding maximum EIRP and duty cycle allowed. 
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the 
FCC  Rules.  These  limits  are  designed  to  provide  reasonable  protection  against  harmful  interference  in  a  residential 
installation.  This  equipment  generates,  uses  and  can  radiate  radio  frequency  energy  and,  if  not  installed  and  used  in 
accordance  with  the  instructions,  may  cause  harmful  interference  to  radio  communications.  However,  there  is  no 
guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to 
radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try 
to correct the interference by one or more of the following measures: 
—Reorient or relocate the receiving antenna. 
—Increase the separation between the equipment and receiver. 
—Connect the equipment into an outlet on a circuit different from that to which the   receiver is connected. 
—Consult the dealer or an experienced radio/TV technician for help 
This  equipment  complies  with  RSS102’s  and  FCC  radiation  exposure  limits  set  forth  for  an  uncontrolled  environment 
under the following conditions: 
1.  This  equipment  should  be  installed  and  operated  such  that  a  minimum separation  distance  of  20cm  is  maintained 
between the radiator (antenna) and user’s/nearby person’s body at all times. 
2.  This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. 
11.3 Wirnet iFemtoCell 923MHz (certification on going) 
The Wirnet iFemtoCell 923 will be compliant to: 
 IEC 60950-1:2005/A1:2009/A2:2013 
 CENELEC EN 60 950-1 (Ed. 2006/A11 : 2009/A1 : 2010/A12:2011/A2:2013) 
 AS/NZS 60950.1 : 2011 
 GB4943-2011 
 K60950-1 
 J60950-1 
The Wirnet iFemtoCell 923 will also be compliant to both FCC and CE regulations. 
Applicable documents: 
 Article 3.2 of the RED Directive: 
Applied standard(s):   
o EN 300 220-1, issue 3.1.1  
o EN 300 220-2, issue 3.1.1  
o EN 300 328, issue 2.1.1 
The Wirnet iFemtoCell 923 is considered as a category 2 receiver according to the EN 300 220-1. 
 AS/NZS 4268 2017 : Radio equipment and systems – Short range devices – Limits and methods of measurement 
 ARIB STD-T108 - 920MHz-Band Telemeter, Telecontrol and Data Transmission Radio Equipment 
 Clause 2, Article 58-2 of Radio Waves Act (Republic of Korea) 
 IMDA Technical Specifications for Short Range Devices (IMDA TS SRD) – Issue 1 Rev 1, October 2016  
The power supply of the Wirnet iFemtoCell 923 must be a limited power source. 
 • Depending on  the  countries,  check  the  specific  regulations  applying,  especially  regarding  frequency  range,  maximum 
EIRP, duty cycle allowed, maximum transmit duration, carrier sense mandatory or not… 
• Please contact your reseller to have details on specific rules for specific countries. 
12 Contact 
For additional information, please contact your reseller. 
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