Stealth-2 series
2- port Industrial RS-232/422/485 serial device servers

Stealth device servers are designed to make products with serial interfaces network-connected. The small size of the servers makes them ideal for Industrial environments where devices such as card readers and payment terminals can connect to an IP-based Ethernet LAN.Using these device servers gives PC software direct access to serial devices from anywhere on the network.

These Serial device servers are extremely compact, specially designed to be extremely rugged, with user- friendly intefaces for quick configuration, making simple and reliable serial-to-Ethernet solutions possible. They function not just as a physical converter of Serial ports to Ethernet and Fiber, but also provide protocols support like Modbus, ASCII, RTU and TCP, and Rest API, to provide a one-stop highly flexible and configurable Industrial Grade solution.

The Stealth series convert between Modbus TCP and Modbus RTU/ASCII protocols. Up to 16 simultaneous Modbus TCP masters are supported, with up to 31 RTU/ASCII slaves per serial port. For RTU/ASCII masters, up to 32 TCP slaves are supported. With these models, Modbus serial slave devices can be seamlessly incorporated into an existing Modbus TCP network, and Modbus TCP slaves can be made accessible to serial masters. They can manage up to 124 serial slave nodes. Each RS-232/422/485 serial port can be configured individually for Modbus RTU or Modbus ASCII operation and for different baudrates, allowing both types of networks to be integrated with Modbus TCP through one Modbus gateway.

With its unique options of Fiber it provides a good solution for a high-end serial to Fibre converter for varied Industrial applications.

Product Highlights

  • Built for harsh environments and temperature ranges (-40°C to +70°C)
  • Hardened for vibration, shock and surge, and electrical noise immunity
  • A single product that combines Serial to Ethernet media conversion while also acting as a protocol converter between Modbus ASCII, RTU and TCP and Rest APIs
  • Built-in high performance ARM with sufficient RAM and Flash for easy addition of custom software protocols for conversion
  • One-of-a-kind support for PoE, not commonly seen in products on this range, increases flexibility
  • Fiber interface adds one more media conversion feature to convert serial data to fiber
  • CE/FCC and UL


Software features


IPv4, ICMP, TCP, UDP, DHCP Client, SNMP, HTTP, Telnet, RFC2217


Web console (HTTP), Telnet console

Virtual COM

Windows / Linux redirection software

Industrial Software

Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave

Network Interface

Ethernet Port

1x 10/100BASE-T(X) RJ-45 OR 802.3 10BASE-F / 100BASE-FX with auto negotiation SFP

Magnetic Isolation


Power over Ethernet (option)

IEEE 802.3af for Power over Ethernet (PD)

Serial Interface


D-Sub9 RS-232/422/485 software selectable

3.81mm TB5 RS-232/422/485 software selectable (TB models)


2 Ports

Braud Rate

1200~230Kbps (RS-485 4-wire allows up to 921,600 bps)

Data Bits

5, 6, 7, 8

Stop Bits

1, 1.5, 2

Flow Control

None, Xon/Xoff, RTS/CTS

Pull High/Low Resistor for RS-485

1 kilo-ohm, 150 kilo-ohms

RS-485 Data Direction Control

Terminator for RS-485

120 ohms

USB Interfaces

USB port

1x USB A Type connector (USB 2.0)

Physical Characteristics

Dimension (W x H x D)

125 mm x 93.5 mm x 28 mm, IP30


Wall mount, DIN-Rail (optional)

Reset Button




Environmental limits

Operating Temperature

-40°C ~ 70°C ( -40º ~ 158ºF )

Storage Temperature

-40ºC ~ 85ºC ( -40º~ 185ºF )

Ambient Relative Humidity

5~95% RH, (non-condensing)


10 years limited hardware warranty on all Pantherun branded products

Ordering Information


2-port Industrial Serial Device Server, DB9, RJ45


2-port Industrial Serial Device Server, Terminal Block,RJ45


2-port Industrial Serial Device Server, Terminal Block, PoE


2-port Industrial Serial Device Server, DB9, SFP


2-port Industrial Serial Device Server, Terminal Block, with SFP