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NPort W2150A/NPort W2250A

1 and 2-port serial-to-WiFi (802.11a/b/g/n) device servers with wireless client

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Features and Benefits

  • Link any serial or Ethernet device to an IEEE 802.11a/b/g/n network
  • 921.6 kbps baudrate for RS-232/422/485 transmissions
  • Web-based configuration using built-in Ethernet or WLAN
  • Enhanced surge protection for serial, LAN, and power
  • Remote configuration with HTTPS, SSH
  • Secure data access with WEP, WPA, WPA2
  • Fast automatic wireless fast roaming
  • Offline port buffering and serial data log
  • Dual power inputs (1 screw-type power jack, 1 terminal block)
  • Supports wireless clients 



The NPort® W2150A and W2250A are the ideal choice for connecting your serial or Ethernet devices, such as PLCs, meters, and sensors, to a wireless LAN. Your communications software will be able to access the serial devices from anywhere over a wireless LAN. Moreover, the wireless device servers require fewer cables and are ideal for applications that involve difficult wiring situations. In Infrastructure Mode or Ad-Hoc Mode, the NPort® W2150A and NPort® W2250A can connect to Wi-Fi networks at offices and factories to allow users to move, or “roam,” between several APs (Access Points), and offer an excellent solution for devices that are frequently moved from place to place.



Pin Assignment

Ethernet Interface
Number of Ports 1
Speed 10/100 Mbps, auto MDI/MDIX
Connector RJ45
Magnetic Isolation Protection 1.5 kV built-in
WLAN Interface
Standard Compliance 802.11a/b/g/n
Network Modes Infrastructure, Ad-Hoc
Transmit Power 802.11b:
Typ. 16 dBm ±1.5 dBm @ 1 Mbps,
Typ. 16 dBm ±1.5 dBm @ 11 Mbps
Typ. 15 dBm ±1.5 dBm @ 6 Mbps,
Typ. 14 dBm ±1.5 dBm @ 54 Mbps
Typ. 16 dBm ±1.5 dBm @ 6 Mbps,
Typ. 14 dBm ±1.5 dBm @ 54 Mbps
802.11n 2.4 GHz
Receive Sensitivity 802.11b:
-92 dBm @ 1 Mbps, -84 dBm @ 11 Mbps
-91 dBm @ 6 Mbps, -74 dBm @ 54 Mbps
-91 dBm @ 6 Mbps, -73 dBm @ 54 Mbps
802.11n 2.4 GHz
-89 dBm @ 6.5 Mbps (20 MHz), -71 dBm @ 72.2 Mbps (20 MHz)
802.11n 5 GHz
Radio Frequency Type DSSS/OFDM
Transmission Rate 802.11a: 54 Mbps
802.11b: 11 Mbps
802.11g: 6 to 54 Mbps
802.11n: 6.5 to 150 Mbps
Transmission Distance Up to 100 meters (in open areas)
Wireless Security • WEP: 64-bit/128-bit data encryption
• WPA, WPA2, 802.11i: Enterprise mode and Pre-Share Key (PSK) mode
Antenna Connector Reverse SMA
Serial Interface
Number of Ports NPort W2150A: 1
NPort W2250A: 2
Serial Standards RS-232/422/485 (DB9 male connector)
Offline Port Buffering NPort W2150A: 20 MB
NPort W2250A: 10 MB
Serial Line Surge Protection 1 kV (level 2)
Serial Communication Parameters
Data Bits 5, 6, 7, 8
Stop Bits 1, 1.5, 2
Parity None, Even, Odd, Space, Mark
Flow Control RTS/CTS, XON/XOFF
Baudrate 50 bps to 921.6 kbps
Serial Data Log 64 KB
Serial Signals
RS-422 TxD+, TxD-, RxD+, RxD-, GND
RS-485-4w TxD+, TxD-, RxD+, RxD-, GND
RS-485-2w Data+, Data-, GND
Network Protocols ICMP, IPv4, TCP, UDP, DHCP, Telnet, DNS, SNMP V1/V2c/V3, HTTP, SMTP, SNTP, SSH, HTTPS, ARP
Configuration Options Web Console, Serial Console, Telnet Console, Windows Utility
Secure Configuration Options HTTPS, SSH
Windows Real COM Drivers Windows 95/98/ME/NT/2000, Windows XP/2003/Vista/2008/7/8/8.1/10 (x86/x64), Windows 2008 R2/2012/2012 R2 (x64), Windows Embedded CE 5.0/6.0, Windows XP Embedded
Fixed TTY Drivers SCO Unix, SCO OpenServer, UnixWare 7, QNX 4.25, QNX 6, Solaris 10, FreeBSD, AIX 5.x, HP-UX 11i, Mac OS X
Linux Real TTY Drivers Linux 2.4.x, 2.6.x, 3.x, 4.x
Android API Android 3.1.x and later
Utilities NPort Search Utility and NPort Windows Driver manager
Management SNMP MIB-II
Physical Characteristics
Housing Aluminum sheet metal (1 mm)
Weight NPort W2150A: 547 g (1.21 lb)
NPort W2250A: 557 g (1.23 lb)
Dimensions Without ears or antenna: 77 x 111 x 26 mm (3.03 x 4.37 x 1.02 in)
With ears, without antenna: 100 x 111 x 26 mm (3.94 x 4.37 x 1.02 in)
Antenna Length: 109.79 mm (4.32 in)
Environmental Limits
Operating Temperature Standard Models: 0 to 55°C (32 to 131°F)
Wide Temp. Models: -40 to 75°C (-40 to 167°F)
Storage Temperature -40 to 75°C (-4 to 167°F)
Ambient Relative Humidity 5 to 95% (non-condensing)
Power Requirements
Input Voltage 12 to 48 VDC
Input Current NPort W2150A: 179 mA @ 12 VDC
NPort W2250A: 200 mA @ 12 VDC
Standards and Certifications
Safety UL 60950-1
EMC EN 55032/24
EMI CISPR 32, FCC Part 15B Class A
EMS IEC 61000-4-2 ESD: Contact: 4 kV; Air: 8 kV
IEC 61000-4-3 RS: 80 MHz to 1 GHz: 3 V/m
IEC 61000-4-4 EFT: Power: 2 kV; Signal: 2 kV
IEC 61000-4-5 Surge: Power: 2 kV; Signal: 1 kV
IEC 61000-4-6 CS: 150 kHz to 80 MHz: 3 V/m; Signal: 3 V/m
IEC 61000-4-8 PF
Radio CE (ETSI EN 301 893, ETSI EN 300 328, ETSI EN 301 489-17, ETSI EN 301 489-1), ARIB RCR STD-33, ARIB STD-66
Alert Tool RTC (real-time clock)
Automatic Reboot Trigger Built-in WDT (watchdog timer)
MTBF (mean time between failures)
Time NPort W2150A: 383,187 hrs
NPort W2250A: 363,327 hrs
Standard Telcordia (Bellcore) Standard TR/SR
Warranty Period 5 years
Details See www.moxa.com/warranty

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Available Models

  Model No. Description
NPort W2150A 1-port RS-232/422/485 wireless device server with 802.11a/b/g/n WLAN, antenna, 0 to 55°C operating temperature
NPort W2250A 2-port RS-232/422/485 wireless device server with 802.11a/b/g/n WLAN, antenna, 0 to 55°C operating temperature
NPort W2150A-T 1-port RS-232/422/485 wireless device server with 802.11a/b/g/n WLAN (includes US, Euro, Japan band), -40 to 75°C operating temperature
NPort W2250A-T 2-port RS-232/422/485 wireless device server with 802.11a/b/g/n WLAN (includes US, Euro, Japan band), -40 to 75°C operating temperature

Optional Accessories

Mounting Kits
  Model No. Description
DK35A DIN-Rail Mounting Kit (35 mm)
  Model No. Description
Mini DB9F-to-TB DB9 Female to Terminal Block connector
Wireless LAN Antennas
  Model No. Description
ANT-WSB-PNF-12 2.4GHz, Directional/Panel antenna, 12dBi, N-type (female) connector
ANT-WSB-PNF-18 2.4 GHz, panel antenna, 18 dBi, N-type (female)
ANT-WDB-ANM-0502 2.4/5 GHz, dual-band omni-directional antenna, 5/2 dBi, N-type (male)
ANT-WDB-ANF-0609 2.4/5 GHz, dual-band omni-directional antenna, 6/9 dBi, N-type (female)
ANT-WDB-PNF-1518 2.4/5 GHz, dual-band panel antenna, 15/18 dBi, N-type (female)
ANT-WDB-ANF-0407 Dual-band omni-directional antenna: 4 dB at 2.4 GHz and 7 dB at 5 GHz
ANT-WSB-AHRM-05-1.5m 2.4 GHz, omni-directional/dipole antenna, 5 dBi
ANT-WDB-ANM-0407 2.4/5 GHz, dual-band omni-directional antenna, 4/7 dBi, N-type (male)
ANT-WSB5-ANF-12 5 GHz, omni-directional antenna, 12 dBi, N-type (female)
ANT-WSB5-PNF-18 Directional panel antenna: 18 dBi at 5 GHz
ANT-WSB-ANF-09 2.4 GHz,omni-directional antenna, 9 dBi, N-type (female)

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