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Industrial Mesh Wi-Fi Serial/Ethernet Device Gateway

Vendor : NEXCOM

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Industrial IoT Gateways are rugged by design and intended for critical systems and industrial environments where sensor nodes or I/O devices are utilized to obtain data. IoT Gateways can be configured with a range of different protocols which allows them to communicate with these end sensors nodes or I/O devices. NIO 51 fills the communication gap between legacy edge nodes to the control center, enabling field data to be harnessed for manufacturing process optimization, asset management, and preventive maintenance. 

NIO 51 brings the wireless connectivity from serial devices or Ethernet devices perfectly to Wi-Fi Mesh backbone in smart factories. Due to Wi-Fi Mesh technology, every device connecting to NIO 51 can easily keep multiple Wi-Fi connecting paths to either IWF310 EZ Mesh backbone or neighbor NIO51 devices to communicate with the control center even the devices are in moving status such as AGV application in factories.  


  • Support EZ Mesh and Wi-Fi client router operation mode
  • Selectable 2.4GHz/5GHz, 2x2 MIMO
  • Support serial to Ethernet' serial to Wi-Fi and Ethernet to Wi-Fi
  • Support Modbus/RTU to Modbus/TCP
  • Built-in offline port buffer with 20MB of storage
  • High immunity to Surge, ESD & EFT protection
  • Up to 921.6Kbps baud rate for RS-232/422/485 transmissions
  • Web-based configuration
  • Support serial data log
  • Support nCare remote configuration
  • Wide DC input range with 12V-48V
  • Wide operation temperature from -40°C~70°C


Wi-Fi Radi



IEEE802.11a/b/g/n , MIMO 2 x 2

Serial Interface

RS232/422/485 with isolation
- Data bits: 8
- Stop bits: 1 
- Parity: none, even, odd
- Baud rate: 300bps~921.6Kbps

Ethernet Interface




10/100 Mbps

Power Requirements

Input voltage: 12~48VDC, 2-pin removable terminal block

Input current: 1.67A@12VDC

LED Indicator

1 x Power/status

1 x Serial status

3 x RSSI indicator

1 x Wi-Fi 2.4/5GHz indicator

1 x Link/Act indicator

1 x Extension module

Factory Default/Reset Button

Press reset button 10 seconds for factory default

Connector type

DC input: Phoenix contact terminal block

Ethernet: RJ-45 connector

Serial signal: DB9

Wi-Fi Operating Mode

EZ Mesh

Client router

Wi-Fi Security (Client Mode)

WEP (64/128)

WPA/WPA2 mixed

WPA2-personal (PSK+CCMP/AES), WPA2-enterprise


Modbus TCP

Modbus RTU

Transparent mode for Serial to Wi-Fi/Ethernet

Serial Port Characteristics

Flow control: XON/XOFF, RTS/CTS

Serial data log: 64KBOffline port buffering: 20MB

Min. concurrent TCP client number: 10

Software Watchdog



81.4 mm x 122.6 mm x 35 mm




Wall mounting

DIN mounting


SGCC chassis with fanless design


- FCC: Part 15C
- CE: EN300328, EN301893Safety
- EN 62368-1EMC
- EN301 489-1/17, FCC Part 15 subpart B, EN55032/55024
- IEC61000-4-2: level 4
- EC61000-4-4: level 4 
- EC61000-4-5 Surge: level 3


Operating temp: -40°C to 70°C

Storage temp: -40°C to 85°C

Relative humidity: operating: 5%~95%, non-condensing

RoHS compliant

- Random: 2Grms @ 5~500 Hz, IEC60068-2-64
- Sinusoidal: 2Grms @ 5~500 Hz, IEC60068-2-6Shock: 50G, half sine, 11ms, IEC60068-27





NIO 51



Download Manual


IoT Gateways offers the ability to access previously hidden data from sensors, embedded controllers and IO devices that can be valuable to a wide range of businesses processes and applications such as:

        ·         Preventive maintenance

        ·         Remote monitoring

        ·         Production optimisation

        ·         Building automation

        ·         Enablement of data and connectivity aggregation

        ·         The connection of new IoT devices (or legacy devices) to the network,

        ·         The translation of IT, OT and IoT protocols

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