Moxa Technologies AirWorks AWK-4121 User Manual
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Moxa Technologies AirWorks AWK-4121 User Manual

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Moxa AirWorks AWK-4121
User's Manual
First Edition, January 2009
www.moxa.com/product
© 2009 Moxa Inc. All rights reserved.
Reproduction without permission is prohibited.

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  • Page 1 Moxa AirWorks AWK-4121 User’s Manual First Edition, January 2009 www.moxa.com/product © 2009 Moxa Inc. All rights reserved. Reproduction without permission is prohibited.
  • Page 2 Moxa AirWorks AWK-4121 User’s Manual The Moxa software described in this manual is furnished under a license agreement and may be used only in accordance with the terms of that agreement. Copyright Notice Copyright © 2009 Moxa Inc. All rights reserved.

  • Page 3: Table Of Contents

    Table of Contents Chapter 1 Introduction ....................1-1 Overview..........................1-2 Package Checklist ........................1-2 Product Features ........................1-2 Product Specifications ......................1-3 Functional Design ........................1-5 LED Indicators ......................1-5 Beeper........................... 1-6 Reset Button ......................... 1-6 Relay (Digital Output) ....................1-7 Chapter 2 Getting Started .....................2-1 First-time Installation and Configuration.................
  • Page 4 Firmware Upgrade...................... 3-40 Config Import Export ....................3-40 Load Factory Default....................3-41 Password........................3-41 Save Configuration ........................ 3-41 Restart ............................ 3-42 Logout............................ 3-43 Chapter 4 Other Console Configurations..............4-1 RS-232 Console Configuration (115200, None, 8, 1, VT100)..........4-2 Configuration by Telnet and SSH Consoles................4-4 Configuration by Web Browser with HTTPS/SSL ..............

  • Page 5: Chapter 1 Introduction

    Introduction Chapter 1 Moxa AirWorks AWK-4121 enables wireless access to network resources. The AWK-4121 is rated to operate at temperatures ranging from -40 to 75°C and is rugged enough for any harsh industrial environment. In this chapter, we cover the following topics:...

  • Page 6: Overview

    AirWorks AWK-4121 User’s Manual Introduction Overview The AWK-4121 outdoor wireless AP/bridge/client is an ideal 3-in-1 solution for industrial applications that are hard to wire, too expensive to wire, or use mobile equipment that connect to a TCP/IP network. The AWK-4121 is rated to operate at temperatures ranging from -40 to 75°C, and its dust-tight and weatherproof design is IP67-rated.

  • Page 7: Product Specifications

    AirWorks AWK-4121 User’s Manual Introduction IP67-rated metal housing Product Specifications WLAN Standards IEEE 802.11a/g/b for Wireless LAN IEEE 802.11i Wireless Security IEEE 802.3u 10/100BaseT(X) for Ethernet LAN EEE 802.3af for Power-over-Ethernet IEEE 802.1D/w STP/RSTP Spread Spectrum and 802.11b: DSSS with DBPSK, DQPSK, CCK Modulation (Typical) 802.11g: OFDM with BPSK, QPSK, 16QAM, 64QAM...
  • Page 8 AirWorks AWK-4121 User’s Manual Introduction 10 to 48V for state “1” (ON) ‧ Max. input current: 8 mA ‧ Console RS-232 (RJ45 type) LAN Port 10/100BaseT(X) auto negotiation speed LED Indicators PWR, FAULT, STATE, WLAN and LAN Power Input Voltage 12 to 48 VDC, redundant dual DC power inputs or 48 VDC Power-over-Ethernet (IEEE 802.3af)

  • Page 9: Functional Design

    AirWorks AWK-4121 User’s Manual Introduction Functional Design LED Indicators The LEDs on the front panel of AWK-4121 allow you to identity the status and wireless settings quickly. The LED for FAULT indicates the system failure and user-configured events. If the AWK-4121 cannot retrieve the IP address from a DHCP server, the FAULT LED will blink at an interval of one second.

  • Page 10: Beeper

    AirWorks AWK-4121 User’s Manual Introduction ATTENTION When the LEDs for STATE (Green), FAULT, and WLAN all light up simultaneously and blink at one-second intervals, it means the system failed to boot. This may be due to improper operation or uncontrollable issues, such as an unexpected shutdown during firmware update. To recover the firmware, refer to “Firmware Recovery”...

  • Page 11: Relay (Digital Output)

    AirWorks AWK-4121 User’s Manual Introduction Relay (Digital Output) The AWK-4121 has one relay output, which consists of the 2 contacts for the 8-pin M12 connector on the bottom panel, as shown below. These relay contacts forward system failure and user-configured events.

  • Page 12: Chapter 2 Getting Started

    Getting Started Chapter 2 This chapter explains how to install Moxa’s AirWorks AWK-4121 for the first time, quickly set up your wireless network, and test whether the connection is running well. With the function guide, you can easily locate the functions you need.

  • Page 13: First-Time Installation And Configuration

    AirWorks AWK-4121 User’s Manual Getting Started First-time Installation and Configuration Before installing the AWK-4121, make sure all items in the Package Checklist are in the box. In addition, you will need access to a notebook computer or PC equipped with an Ethernet port. The AWK-4121 has a default IP address that you must use when connecting to the device for the first time.

  • Page 14: Communication Testing

    AirWorks AWK-4121 User’s Manual Getting Started NOTE Default user name and password: User Name: admin Password: root For security reasons, we strongly recommend changing the default password. To do so, select Maintenance > Password, and then follow the on-screen instructions to change the password.

  • Page 15: Function Guide

    AirWorks AWK-4121 User’s Manual Getting Started After configuring the WLAN card, establish a wireless connection with the AWK-4121 and open a DOS window on Notebook B. At the prompt, type ping <IP address of notebook A> and then press Enter (see the figure below). A “Reply from IP address …” response means the communication was successful.
  • Page 16 AirWorks AWK-4121 User’s Manual Getting Started A quick overview of the AWK-4121’s status Basic settings for administering the AWK-4121 Essential settings related to establishing a wireless network Advanced features to support additional network management and secure wired and wireless communication * These advanced functions are all optional.

  • Page 17: Web Console Configuration

    Web Console Configuration Chapter 3 In this chapter, we will explain each web management page of the web-based console configuration. Moxa’s easy-to-use management functions will help you set up your AWK-4121, as well as establish and maintain your wireless network easily. In this chapter, we cover the following topics: Configuration by Web Browser Overview...

  • Page 18: Configuration By Web Browser

    AirWorks AWK-4121 User’s Manual Web Console Configuration Configuration by Web Browser Moxa AWK-4121’s web browser interface provides a convenient way to modify its configuration and access the built-in monitoring and network administration functions. The recommended web ® browser is Microsoft Internet Explorer 5.5 or 6.0 with JVM (Java Virtual Machine) installed.
  • Page 19 AirWorks AWK-4121 User’s Manual Web Console Configuration You may need to wait a few moments for the web page to download onto your computer. Please note that the model name and IP address of your AWK-312 are both shown in the title of the web page.

  • Page 20: Overview

    AirWorks AWK-4121 User’s Manual Web Console Configuration Overview The Overview page summarizes the AWK-4121’s current status. The information is categorized into several groups: System info, Device info and 802.11 info. NOTE Some values for 802.11 info may not show up due to different operation modes. For example...

  • Page 21: Basic Settings

    AirWorks AWK-4121 User’s Manual Web Console Configuration Basic Settings The Basic Settings group includes the most commonly used settings required by administrators to maintain and control the AWK-4121. System Info Settings The System Info items, especially Device name and Device description, are displayed and included on the Overview page, SNMP information, and alarm emails.

  • Page 22: Network Settings

    AirWorks AWK-4121 User’s Manual Web Console Configuration Network Settings The Network Settings configuration allows you to modify the usual TCP/IP network parameters. An explanation of each configuration item is given below. IP configuration Setting Description Factory Default DHCP The AWK-4121’s IP address will be...

  • Page 23: Time Settings

    AirWorks AWK-4121 User’s Manual Web Console Configuration Primary/ Secondary DNS server Setting Description Factory Default IP address of Primary/ The IP address of the DNS Server used by your None Secondary DNS server network. After entering the DNS Server’s IP address, you can input the AWK-4121’s URL...

  • Page 24: Wireless Settings

    AirWorks AWK-4121 User’s Manual Web Console Configuration Local time Setting Description Factory Default User adjustable time The date and time parameters allow None configuration of the local time with (yyyy/mm/dd hh:mm:ss an interactive dialog box. format; 24-hour format.) Time zone...
  • Page 25 AirWorks AWK-4121 User’s Manual Web Console Configuration In either mode, the AWK-4121 forwards packets between its Ethernet interface (LAN) and wireless interface (WLAN) for wired hosts on the Ethernet side and wireless host(s) on the wireless side. There are two types of wireless links as specified by the IEEE802.11 standard: STA-AP This type of wireless link is established between an IEEE802.11 Station (STA) and an...
  • Page 26 AirWorks AWK-4121 User’s Manual Web Console Configuration Operation mode Setting Description Factory Default AWK-4121 plays a role of wireless AP/ Bridge. Client AWK-4121 plays a role of wireless AP Client. NOTE When you switch to Client mode, you can find an additional Site Survey button on this page. It can support site survey and pop up a dialog box listing the information of available APs, as shown in the following figure.
  • Page 27 AirWorks AWK-4121 User’s Manual Web Console Configuration RF type Setting Description Factory Default Supports IEEE802.11a standard only B/G Mixed Supports IEEE802.11b standard only Supports IEEE802.11g standard only B/G Mixed Supports both of IEEE802.11b/g standards, but 802.11g can be slowed down when 802.11b clients are on the...

  • Page 28: Wlan Security Settings

    AirWorks AWK-4121 User’s Manual Web Console Configuration NOTE The AWK-4121 provides 8 entities for WDS settings and can support up to 8 WDS links to other APs or wireless bridges. The list appears when WDS Enable is checked. Enter the MAC address to set up a WDS link.
  • Page 29 AirWorks AWK-4121 User’s Manual Web Console Configuration Security mode Setting Description Factory Default Open No authentication Open Static WEP is used WPA* WPA is used WPA2* Fully supports IEEE802.11i with “TKIP/AES + 802.1X” * WPA and WPA2 cannot be supported in WDS (Bridge) mode.
  • Page 30 AirWorks AWK-4121 User’s Manual Web Console Configuration Authentication type Setting Description Factory Default Open Data encryption is enabled, but no Open authentication Shared Data encryption and authentication are both enabled. Key type Setting Description Factory Default Specifies WEP keys in hex-decimal...
  • Page 31 AirWorks AWK-4121 User’s Manual Web Console Configuration WPA type Setting Description Factory Default Personal Provides Pre-Shared Key-enabled Personal WPA and WPA2 Enterprise Provides enterprise-level security for WPA and WPA2 Encryption method Setting Description Factory Default TKIP Temporal Key Integrity Protocol is...
  • Page 32 AirWorks AWK-4121 User’s Manual Web Console Configuration WPA/WPA2-Enterprise (for AP mode) By selecting WPA type as Enterprise, you can use EAP (Extensible Authentication Protocol), a framework authentication protocol used by 802.1X to provide network authentication. In these Enterprise-level security modes, a back-end RADIUS (Remote Authentication Dial-In User Service) server is needed if IEEE 802.1X functionality is enabled in WPA /WPA2.
  • Page 33 AirWorks AWK-4121 User’s Manual Web Console Configuration Key renewal Setting Description Factory Default 60 – 86400 seconds Specifies the time period of group 3600 (seconds) (1 minute to 1 year) key renewal WPA/WPA2-Enterprise (for Client mode) In a client role, the AWK-4121 can support three EAP methods (or EAP protocols): EAP-TLS, EAP-TTLS, and EAP-PEAP, corresponding to WPA/WPA-Enterprise settings on the AP side.
  • Page 34 AirWorks AWK-4121 User’s Manual Web Console Configuration You can use Basic Wireless Settings → WLAN Certificate Settings to import your WLAN certificate and enable EAP-TLS on the client end. You can check the current certificate status in Current Status if it is available.
  • Page 35 AirWorks AWK-4121 User’s Manual Web Console Configuration TTL Inner Authentication Setting Description Factory Default MS-CHAP-V2 Password Authentication Protocol is used CHAP Challenge Handshake Authentication Protocol is used MS-CHAP Microsoft CHAP is used MS-CHAP-V2 Microsoft CHAP version 2 is used Anonymous...

  • Page 36: Advanced Wireless Settings

    AirWorks AWK-4121 User’s Manual Web Console Configuration Inner EAP protocol Setting Description Factory Default MS-CHAP-V2 Microsoft CHAP version 2 is used MS-CHAP-V2 Anonymous Setting Description Factory Default Max. 31 characters A distinct name used for outer None authentication User name & Password...

  • Page 37: Wlan Certification Settings (For Eap-Tls In Client Mode Only)

    AirWorks AWK-4121 User’s Manual Web Console Configuration Beacon Interval (for AP mode only) Setting Description Factory Default Beacon Interval This value indicates the frequency 100 (ms) (40-1000 ms) interval of the beacon DTIM Interval (for AP mode only) Setting Description...

  • Page 38: Advanced Settings

    AirWorks AWK-4121 User’s Manual Web Console Configuration Certificate issued by: shows the certificate issuer Certificate expiration date: indicates when the certificate gets invalid You can import a new WLAN certificate in Import WLAN Certificate by following these steps in order: 1.
  • Page 39 AirWorks AWK-4121 User’s Manual Web Console Configuration You can also assign a static IP address to a specific client by entering its MAC address. The AWK-4121 provides a Static DHCP mapping list with up to 16 entities. Be reminded to check the Active check box for each entity to activate the setting.

  • Page 40: Packet Filters

    AirWorks AWK-4121 User’s Manual Web Console Configuration Start IP address Setting Description Factory Default IP address Indicates the IP address which None AWK-4121 can start assigning Maximum number of users Setting Description Factory Default 1 – 999 Specifies how many IP address can be...
  • Page 41 AirWorks AWK-4121 User’s Manual Web Console Configuration ATTENTION Be careful when you enable the filter function: Drop + “no entity on list is activated” = all packets are allowed Accept + “no entity on list is activated” = all packets are...
  • Page 42 AirWorks AWK-4121 User’s Manual Web Console Configuration TCP/UDP Port Filter The AWK-4121’s TCP/UDP port filter is a policy-based filter that can allow or filter out TCP/UDP-based packets with a specified source or destination port. The AWK-4121 provides 8 entities for setting the range of source/destination ports of a specific protocol.

  • Page 43: Rstp Settings (For Ap Mode Only)

    AirWorks AWK-4121 User’s Manual Web Console Configuration RSTP Settings (for AP mode only) AWK-4121 supports IEEE802.1D Spanning Tree Protocol and IEEE802.1w Rapid STP standards. In addition to eliminating unexpected path looping, STP/RSTP can provide a backup path recovery if a wired/ wireless path fails accidentally. The reliability and availability can increase because this fail-over function.
  • Page 44 AirWorks AWK-4121 User’s Manual Web Console Configuration Forwarding delay Setting Description Factory Default Numerical value input The amount of time this device waits 15 (seconds) by user before checking to see if it should (4 – 30 seconds) change to a different topology.

  • Page 45: Snmp Agent

    AirWorks AWK-4121 User’s Manual Web Console Configuration Port Status Port Status indicates the current Spanning Tree status of this port. Use Forwarding for normal transmission, or Blocking to block transmission. SNMP Agent The AWK-4121 supports SNMP V1/V2c/V3. SNMP V1 and SNMP V2c use a community string match for authentication, which means that SNMP servers access all objects with read-only or read/write permissions using the community string public/private (default value).
  • Page 46 AirWorks AWK-4121 User’s Manual Web Console Configuration Enable Setting Description Factory Default Enable Enables SNMP Agent Disable Disable Disables SNMP Agent Read community (for V1, V2c) Setting Description Factory Default V1, V2c Read Use a community string match with a...

  • Page 47: Auto Warning Settings

    AirWorks AWK-4121 User’s Manual Web Console Configuration Auto Warning Settings Since industrial-grade devices are often located at the endpoints of a system, these devices will not always know what is happening elsewhere on the network. This means that these devices, including wireless APs or clients, must provide system maintainers with real-time alarm messages.

  • Page 48: Syslog

    AirWorks AWK-4121 User’s Manual Web Console Configuration Power events Event is triggered when… Power 1/2 transition (On -> Off) The AWK-4121 is powered down in PWR1/2. PoE transition (On -> Off) The AWK-4121 is powered down in PoE. Power 1/2 transition (Off -> On) The AWK-4121 is powered via PWR1/2.

  • Page 49: E-Mail

    AirWorks AWK-4121 User’s Manual Web Console Configuration Syslog port Setting Description Factory Default Port destination Enter the UDP port of the (1 to 65535) corresponding Syslog server E-mail E-mail Event Types Check the box for Active to enable the event items. All default values are deactivated (unchecked).

  • Page 50: Relay

    AirWorks AWK-4121 User’s Manual Web Console Configuration Mail server (SMTP) Setting Description Factory Default IP address The IP address of your email server. None User name & Password Setting Description Factory Default User name and password used in the None...

  • Page 51: Trap

    AirWorks AWK-4121 User’s Manual Web Console Configuration Trap Traps can be used to signal abnormal conditions (notifications) to a management station. This trap-driven notification can make your network more efficient. Because a management station usually takes care of a large number of devices that have a large number of objects, it will be overloading for the management station to poll or send requests to query every object on every device.

  • Page 52: Status

    AirWorks AWK-4121 User’s Manual Web Console Configuration 1st / 2nd Trap server IP/name Setting Description Factory Default IP address or host name Enter the IP address or name of the None trap server used by your network. 1st / 2nd Trap community...

  • Page 53: System Log

    AirWorks AWK-4121 User’s Manual Web Console Configuration System Log Triggered events are recorded in System Log. You can export the log contents to an available viewer by clicking Export Log. You can use the Clear Log button to clear the log contents and the Refresh button to refresh the log.

  • Page 54: Di And Power Status

    AirWorks AWK-4121 User’s Manual Web Console Configuration DI and Power Status The status of power inputs and digital inputs is shown on this web page. The status will refresh every 5 seconds if the Auto refresh box is checked. Wireless Status The status for 802.11 info parameters, such as Operation mode and Channel, are shown on the...

  • Page 55: Console Settings

    AirWorks AWK-4121 User’s Manual Web Console Configuration Console Settings You can enable or disable access permission for the following consoles: HTTP, HTTPS, Telnet and SSH connections. For more security, we recommend you only allow access to the two secured consoles, HTTPS and SSH.

  • Page 56: Firmware Upgrade

    AirWorks AWK-4121 User’s Manual Web Console Configuration Firmware Upgrade The AWK-4121 can be enhanced with more value-added functions by installing firmware upgrades. The latest firmware is available at Moxa’s download center. Before running a firmware upgrade, make sure the AWK-4121 is off-line. Click the Browse button to specify the firmware image file and click Firmware Upgrade and Restart to start the firmware upgrade.

  • Page 57: Load Factory Default

    AirWorks AWK-4121 User’s Manual Web Console Configuration Load Factory Default Use this function to reset the AWK-4121 and roll all settings back to the factory default values. You can also reset the hardware by pressing the reset button on the top panel of the AWK-4121.

  • Page 58: Restart

    AirWorks AWK-4121 User’s Manual Web Console Configuration After you click on Save Configuration in the left menu box, the following screen will appear. Click Save if you wish to update the configuration settings in the flash memory at this time.

  • Page 59: Logout

    AirWorks AWK-4121 User’s Manual Web Console Configuration If you run the Restart function without changing any configurations or with all changes already saved, you will see just one Restart button on your screen. You will not be able to run any of the AWK-4121’s functions while the system is rebooting.

  • Page 60: Other Console Configurations

    Other Console Configurations Chapter 4 This chapter explains how to access the AWK-4121 for the first time. In addition to HTTP access, there are four ways to access AWK-4121: serial console, Telnet console, SSH console, and HTTPS console. The serial console connection method, which requires using a short serial cable to connect the AWK-4121 to a PC’s COM port, can be used if you do not know the AWK-4121’s IP address.

  • Page 61: Rs-232 Console Configuration (115200, None, 8, 1, Vt100)

    AirWorks AWK-4121 User’s Manual Other Console Configurations ATTENTION 1. You CANNOT connect to the AWK-4121 by two ore more of these console configurations simultaneously. 2. You can connect to the AWK-4121 simultaneously by web browser and serial/ Telnet /SSH console. However, we strongly suggest that you do NOT use more than one connection method at the same time.
  • Page 62 AirWorks AWK-4121 User’s Manual Other Console Configurations 2. Select Open under Port Manager to open a new connection. 3. The Communication Parameter page of the Property window opens. Select the appropriate COM port for Console Connection, 115200 for Baud Rate, 8 for Data Bits, None for Parity, and 1 for Stop Bits.

  • Page 63: Configuration By Telnet And Ssh Consoles

    AirWorks AWK-4121 User’s Manual Other Console Configurations 6. The AWK-4121’s device information and Main Menu will be displayed. Please follow the description on screen and select the administration option you wish to perform. NOTE To modify the appearance of the PComm Terminal Emulator window, select Edit → Font and then choose the desired formatting options.

  • Page 64: Configuration By Web Browser With Https/Ssl

    AirWorks AWK-4121 User’s Manual Other Console Configurations Follow the steps below to access the console utility via Telnet or SSH client. 1. From Windows Desktop, run Start → Run, and then use Telnet to access the AWK-4121’s IP address from the Windows Run window. (You may also issue the telnet command from the MS-DOS prompt.)
  • Page 65 AirWorks AWK-4121 User’s Manual Other Console Configurations 2. Warning messages will pop out to warn users that the security certificate was issued by a company they have not chosen to trust. 3. Select Yes to accept the certificate issued by Moxa IW and then enter the AWK-4121’s web browser interface secured via HTTPS/SSL.

  • Page 66: Disabling Telnet And Browser Access

    AirWorks AWK-4121 User’s Manual Other Console Configurations Disabling Telnet and Browser Access If you are connecting the AWK-4121 to a public network but do not intend to use its management functions over the network, then we suggest disabling both Telnet Console and Web Configuration.

  • Page 67: Chapter 5 References

    References Chapter 5 This chapter provides more detailed information about wireless-related technologies. The information in this chapter can help you administer your AWK-4121s and plan your industrial wireless network better. The following topics are covered: Wireless Distribution System (WDS) Beacon DTIM Fragment RTS Threshold...

  • Page 68: Wireless Distribution System (Wds)

    AirWorks AWK-4121 User’s Manual References Wireless Distribution System (WDS) Traditionally, APs are connected via Ethernet LAN ports. By using a Wireless Distribution System (WDS), APs can communicate with one another wirelessly. For example, AP 2 acts as an access point for the notebook computers or other IEEE802.11-enabled clients, and forwards packets sent from the notebook computers to AP 1 through WDS.
  • Page 69 AirWorks AWK-4121 User’s Manual References It is a good idea to plan your wireless network by drawing a diagram so that you know how each AWK-4121 is connected to other peer APs or wireless bridges by WDS, and how bridges are connected to other peer bridges by WDS.

  • Page 70: Beacon

    AirWorks AWK-4121 User’s Manual References Beacon A beacon is a packet broadcast by the AP to keep the network synchronized. A beacon includes the wireless LAN service area, the AP address, the Broadcast destination address, a time stamp, Delivery Traffic Indicator Maps (DTIM), and the Traffic Indicator Message (TIM). Beacon Interval indicates the frequency interval of AP.

  • Page 71: Differences Between Rstp And Stp

    AirWorks AWK-4121 User’s Manual References Differences between RSTP and STP RSTP is similar to STP, but includes additional information in the BPDUs that allow each bridge to confirm that it has taken action to prevent loops from forming when it decides to enable a link to a neighboring bridge.

  • Page 72: Chapter 6 Supporting Information

    Supporting Information Chapter 6 This chapter presents additional information about this manual and product. You can also learn how to contact Moxa for technical support. The following topics are covered: About This User’s Manual DoC (Declaration of Conformity) Federal Communication Commission Interference Statement R&TTE Compliance Statement Firmware Recovery Technical Support Contact Information...

  • Page 73: About This User's Manual

    AirWorks AWK-4121 User’s Manual Supporting Information About This User’s Manual This manual is mainly designed for, but no limited to, the following hardware and firmware for the AWK-4121: Hardware Rev: 1.0 Firmware Ver: You are strongly recommended to visit Moxa’s website (http://www.moxa.com) and find the latest product datasheet, firmware, QIG (Quick Installation Guide), UM (User’s Manual) and related...

  • Page 74: Doc (Declaration Of Conformity)

    AirWorks AWK-4121 User’s Manual Supporting Information DoC (Declaration of Conformity) Federal Communication Commission Interference Statement 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.

  • Page 75: Firmware Recovery

    AirWorks AWK-4121 User’s Manual Supporting Information The ETSI version of this device is also authorized for use in EFTA member states Norway and Switzerland. EU Countries Not Intended for Use None. Potential Restrictive Use France: only channels 10, 11, 12, and 13.
  • Page 76 AirWorks AWK-4121 User’s Manual Supporting Information The ETSI version of this device is also authorized for use in EFTA member states Norway and Switzerland. EU Countries Not Intended for Use None. Potential Restrictive Use France: only channels 10, 11, 12, and 13.

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