AWK-3191 Series

Industrial 900 MHz wireless AP/bridge/client

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Evaluation units available for online purchase
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Features and Benefits 

  • 900 MHz transmission for long distance wireless communication
  • AP/client and master/slave modes supported for point-to-point and point-to-multi-point connections
  • Maximum security with WEP/WPA/WPA2/802.11X and powerful filters
  • Integrated antenna and power isolation
  • -40 to 75°C operating temperature range (T models)


The AWK-3191 900 MHz wireless AP/bridge/client is Moxa’s answer to long distance wireless communication for industrial applications. By combining the characteristics of the 33-centimeter band and the proven 802.11 standards, Moxa is able to provide a reliable long distance wireless solution. Unlike traditional point-to-point 900 MHz radios, the AWK-3191 supports both master/slave and AP/client operation modes to enable both point-to-point and point-to-multi-point communication for higher flexibility and lower total cost of ownership.

Furthermore, the AWK-3191 is designed to be deployed easily, but in case of external interference, Moxa also provides the ability to allow engineers to adjust their 900 MHz central frequency and bandwidth (5/10 MHz and 20 MHz) to optimize their wireless performance.

The AWK-3191 is rated to operate at temperatures ranging from -25 to 60°C for standard models and -40 to 75°C for wide temperature models, and with an industrial-oriented design, it is compliant with various standards and approvals, making it rugged enough for any harsh industrial environment.

Advanced Security 

•  Enable/disable SSID broadcasts
•  WPA/WPA2 (Wi-Fi Protected Access) and 802.11i support
•  IEEE 802.1X / RADIUS support
•  MAC/IP/protocol/port filtering for applications that require more restricted access control

Specifications for Industrial-Grade Applications 

•  Long-distance data transmission over 30 km with directional antenna
•  Power and isolation design for a complete separation between system ground, chase ground, and antenna system to protect against interference from unstable environmental factors
•  Redundant DC power inputs
•  Integrated DI/DO for on-site monitoring and warnings
•  Signal strength LEDs for easy deployment and antenna alignment

Patent Marking

Application Flyer:

900 MHz Solution for Long Distance Communication Download

Deploying long distance communication is usually expensive for industrial applications that require a fast and reliable connection. Moxa’s AWK-3191 wireless AP/bridge/client not only eliminates the wiring expense, it also gives users field tested 900 MHz wireless communication at a 6 Mbps data rate over a distance of 30 km, providing an excellent alternative to expensive microwave radios. Download this application flyer to find out why the AWK-3191 is your best choice for providing seamless network transmission for long distance mining and oil & gas applications...more

White Paper:

Expert Tips for Optimizing Industrial Wireless Networks


Compared with its popularity in everyday commercial environments, Wi-Fi has been slow to gain a foothold in industrial M2M applications. One of the main reasons that industrial customers are reluctant to move from wired to wireless is the problems associated with stability. Wireless transmission is NOT as reliable as wired transmission. However, by following certain best practices it is possible to set up a wireless network that will provide the level of reliability needed for M2M communication applications. In this whitepaper, we present eight expert tips that you can follow to optimize your wireless networks for industrial application environments...more

WLAN Interface
Standards IEEE 802.11i for Wireless Security
IEEE 802.1Q for VLAN
IEEE 802.3af for Power-over-Ethernet*
*Hardware Rev. 3.0.0 supports PoE; hardware Rev. 2.0.0 does not support PoE.
Spread Spectrum and Modulation (typical) • OFDM with BPSK, QPSK, 16QAM, 64QAM
• 64QAM @ 54/48 Mbps, 16QAM @ 36/24 Mbps,
QPSK @ 18/12 Mbps, BPSK @ 9/6 Mbps
Operating Channels (central frequency) US: 902 to 928 MHz (ISM band)
• 915 MHz (BW = 20 MHz)
• 908.5, 915, 921.5 MHz (BW = 10 MHz)
• 905.25, 908.5, 911.75, 915, 918.25, 921.5, 924.75 MHz (BW = 5 MHz)
Security • SSID broadcast enable/disable
• Firewall for MAC/IP/protocol/port-based filtering
• 64-bit and 128-bit WEP encryption, WPA/WPA2-Personal and Enterprise (IEEE 802.1X/RADIUS, TKIP, and AES)
Transmission Rates 6, 9, 12, 18, 24, 36, 48, 54 Mbps
Transmitter Power Typ. 24±1.5 dBm @ 6 to 24 Mbps
Typ. 23±1.5 dBm @ 36 Mbps
Typ. 22±1.5 dBm @ 48 Mbps
Typ. 21±1.5 dBm @ 54 Mbps
Receiver Sensitivity -90 dBm @ 6 Mbps
-88 dBm @ 9 Mbps
-87 dBm @ 12 Mbps
-85 dBm @ 18 Mbps
-81 dBm @ 24 Mbps
-77 dBm @ 36 Mbps
-73 dBm @ 48 Mbps
-71 dBm @ 54 Mbps
Channel Band Width US: 5 MHz, 10 MHz, 20 MHz
Protocol Support
Default Antennas N/A, antenna purchase seperately
Connector for External Antennas RP-SMA (female), 500 V insulation
LAN Ports 1, RJ45, 10/100BaseT(X) auto negotiation speed, F/H duplex mode, and auto MDI/MDI-X connection
Console Port RS-232 (RJ45-type)
Reset Present
LED Indicators PWR1, PWR2, PoE (discontinued starting with Rev. 2.0.0), FAULT, STATE, SIGNAL*, CLIENT MODE, BRIDGE MODE, WLAN, 10M, 100M
*signal strength indicator
Alarm Contact (digital output) 1 relay output with current carrying capacity of 1 A @ 24 VDC
Digital Inputs 2 electrically isolated inputs• +13 to +30 V for state “1”
• +3 to -30 V for state “0”
• Max. input current: 8 mA
Device Management Wireless Search Utility, SNMP
Physical Characteristics
Housing Metal, IP30 protection
Weight 930 g (2.05 lb)
Dimensions 53 x 135 x 105 mm (2.08 x 5.31 x 4.13 in)
Installation DIN-rail mounting (standard), wall mounting (optional)
Environmental Limits
Operating Temperature Standard Models: -25 to 60°C (-13 to 140°F)
Wide Temp. Models: -40 to 75°C (-40 to 167°F)
Storage Temperature -40 to 85°C (-40 to 185°F)
Ambient Relative Humidity 5% to 95% (non-condensing)
Power Requirements
Input Voltage 12 to 48 VDC, redundant dual DC power inputs or 48 VDC Power-over-Ethernet* (IEEE 802.3af compliant)
*Support for PoE discontinued starting with hardware Rev. 2.0.0.
Input Current 0.49 A @ 12 VDC; 0.12 A @ 48 VDC
Connector 10-pin removable terminal block, 500 V insulation
Power Consumption 5.76 W
Reverse Polarity Protection Present
Standards and Certifications
Safety UL 60950-1
EMI CISPR 22, FCC Part 15B Class B
Note Please check Moxa’s website for the most up-to-date certification status.
MTBF (mean time between failures)
Time 484,469 hrs
Standard Telcordia SR332
Warranty Period 5 years
Details See

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Available Models

  Model No. Description
AWK-3191-US Industrial 900 MHz wireless AP/bridge/client, US band (902 to 928 MHz), -25 to 60°C operating temperature
AWK-3191-US-T Industrial 900 MHz wireless AP/bridge/client, US band (902 to 928 MHz), -40 to 75°C operating temperature

Optional Accessories

Wireless Antenna Cable
  Model No. Description
A-CRF-RMNM-L1-900 N-type (male) to RP SMA (male), LMR-195 Lite cable, 9 m
A-CRF-RMNM-L1-600 N-type (male) to RP SMA (male), LMR-195 Lite cable, 6 m
A-CRF-RMNM-L1-300 N-type (male) to RP SMA (male), LMR-195 Lite cable, 3 m
Wireless AP Mounting Kit
  Model No. Description
WK-51-01 Wall-mounting kit, 51mm wide
Wireless Terminating Resistor
  Model No. Description
A-TRM-50-RM Terminating Resistor, 50 ohm, RP-SMA Male
Surge Arrestor
  Model No. Description
A-SA-NFNF-01 Surge arrestor, N-type (female) to N-type (female)
A-SA-NMNF-01 Surge arrester, N-type (female) to N-type (male)
Automatic Backup Configurators
  Model No. Description
Automatic Backup Configurator ABC-01 Configuration backup and restoration tool for managed switches and wireless APs/Bridges/Clients
Wireless Adaptor
  Model No. Description
A-ADP-RJ458P-DB9F-ABC01 RJ45-to-DB9 adaptor for the ABC-01
Wireless LAN Antennas
  Model No. Description
ANT-WSB0.9-YNF-12 900 MHz, Yagi directional antenna, 12 dBi, N-type (female)
ANT-WSB0.9-ANF-09 900 MHz, omni-directional antenna, 9 dBi, N-type (female)

Frequency Shifted Wi-Fi for Long Distance and High Bandwidth 

Download the application note to learn more about Moxa's 900 MHz wireless solution.

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