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DeviceMaster ® RTS 16 LT

The DeviceMaster LT16 provides 16 RS232/422/485 software selectable serial ports in a compact design perfect for POS, hospitality, machine builders, or any application where rugged design and performance is critical but space is at a premium.

Part Number: 99581-4

PortVision DXweb
  • No serial cable distance limitations
  • Digi International Inc.  device server form factor and RS-232 pinout compatible
  • RS-232/422/485 software selectable interfaces
  • Dual 10/100 Fast Ethernet ports
  • Application compatibility supports native COM, TTY, or TCP/IP socket communication modes
  • Web-based or Windows configuration
  • Wide operating temperature (0° to 60°C)
  • Dual Ethernet ports for daisy-chaining devices
  • Low profile - compact housing facilitates easy installation and mounting
  • PortVision DX
  • Wide input power range
  • Configuration management via SSL & SSH
  • SSL/TLS serial data stream encryption up to TLS 1.2
  • TLS 1.2 compliant when running SocketServer
  • Support for the latest Windows operating systems (including Windows® 10) and Linux kernels
  • LED indicators for power and port status
  • Real-time email event notification

The Pepperl+Fuchs Comtrol DeviceMaster 16-port device server is designed for network-enabling serial communications devices. When used with the included NSLink™ driver software and a host PC, the DeviceMaster enables placement of COM or TTY ports anywhere on an Ethernet network or across the Internet. In applications where connecting legacy serial devices to a PC without software changes is a requirement, a pair of DeviceMaster RTS units can be used to create a point-to-point serial tunnel across the network that seamlessly transfers serial data via TCP or UDP socket connections.

  • DeviceMaster LT16
  • Power Supply
  • US Power Cord
  • Euro Power Cord
  • Terminal Block Plug
  • Bumpers
  • Loopback plug
  • Bus Interface Specification10/100BASE-T Ethernet
  • Memory
    • SDRAM16 MB
    • Flash8 MB
  • EnclosureBlack Finished Steel
  • Installation MethodPanel mountable
  • LED IndicatorsStatus, Ethernet Link/Activity, Power Serial, RX/TX Per Port
  • Dimensions11.5" x 1.5" x 5.5"
    292 x 38 x 140 mm
  • Product Weight39.2 oz
    1.11 kg
Electrical Specifications
  • Input Voltage Requirements 9-30VDC
  • Power Consumption4.5 Watts
    • Comtrol External Power Supply(included)
    • Input90-264VAC @ 47-63Hz
    • Output24VDC @ 500mA
  • ESD Surge ProtectionProvides minimum of 15KV protection on all serial lines. All Ethernet components are rated to 1.5KV magnetic surge protection.
Environmental Specifications
  • Air Temperature
    • System On 0° to 60°C
    • System Off-40° to 85°C
  • Operating Humidity0% to 95%
  • Altitude10,000 ft
    3,048 m
  • Mean time between failures (MTBF)39.1 years

Serial Communications

  • Connector TypeRJ45
  • Number of Ports16
  • Serial InterfacesRS-232
    RS-485, 4-wire, Slave
    RS-485, 2-wire
  • Terminal Resistor for RS-422/485Software controllable 120Ω termination resistors available for each transmit and receive differential pair on every port. The 120Ω termination resistors can be enabled between TX+ and TX- OR RX+ and RX- or both on every port.
  • Baud Rate300bps to 230Kbps
  • Receive Buffer4.5 KB
  • Transmit Bufferr4.5 KB
  • Device Driver Data Control
    • Data Bits*5, 6, 7, or 8
    • Parity**Odd, Even, Mark, Space, or none
    • Stop Bits***1, 1.5, or 2
    • Flow ControlHardware, Software, None

      * Data bits 5, 6 are supported only in RFC2217 and socket mode
      ** Mark, Space parity are supported only in RFC2217 and socket mode
      *** Stop bit 1.5 is supported only when used with 5 data bits
Ethernet Specification
  • Number of Ports2
  • Speed10/100Mbps
  • Connector TypeRJ45 Auto MDI/MDI-X
  • Ethernet specific featuresEthernet packet switching, auto negotiation, Link/Activity Status LED
  • Network ProtocolsARP, BOOTP, DHCP/RARP, HTTP, HTTPS, SSH, SSL/TLS, ICMP, RFC 1006 (ISO over TCP), SNMP (MIB-II), TCP/IP & UDP socket services, Telnet, and TFTP, and supports IP multicast data transmission
  • SNMP SupportMonitoring only
  • Other Software FeaturesLowest Latency
    NS-Link COM/TTY port redirector
    TCP/IP & UDP Socket Services
    Telnet/RFC2217 COM Port Control
    PortVision DX remote management
  • Manufacturer's Warranty5 Years
Export Information
  • Packaged Shipping Weight4.85 lbs
    2.2 kg
  • Package Dimensions14.9" x 4" x 10.9"
    378.5 x 101.6 x 276.9 mm
  • UPC Code7-56727-99581-4
  • Country of OriginUSA
  • ECCN5A992
  • Schedule B Number8471.80.1000

Device Drivers

Regulatory Standards

  • EmmissionsFCC Part 15 Subpart B - Class A limit
    Canadian EMC Requirements: ICES-003
    European Standard EN55022
  • ImmunityEuropean Standard EN55024:
    IEC61000-4-2/EN61000-4-2: ESD
    IEC61000-4-3/EN61000-4-3: RF
    IEC61000-4-4/EN61000-4-4: Fast Transient/Burst
    IEC61000-4-5/EN61000-4-5: Surge
    IEC61000-4-6/EN61000-4-6: Conducted Disurbance
    IEC61000-4-8/EN61000-4-8: Magnetic Field
    IEC61000-4-11/EN61000-4-11: Voltage dips and variations
  • SafetyIEC 60950/EN60950 (LISTED)
    CSA C22.2 No. 60950/UL60950
  • OtherRoHS 2 Compliant
Regulatory Approvals
Pinout Diagrams
  • Ground must be tied to signal ground.
Find a Distributor

» Industrial Distributors
» North American Distributors
» International Distributors

Pre-Sales Questions

Pepperl+Fuchs Comtrol's Pre-sales Team
For sales questions or to locate a reseller near you.

Fax: +1.330.405.4710
[email protected]

Pepperl+Fuchs Comtrol's Industrial Automation Sales
For sales questions or to locate an industrial distributor near you.

Fax: +1.330.405.4710
[email protected]

Product Support and Service Information

Part Number: 99581-4

Sales Support

Call +1.330.486.0001, or e-mail [email protected]

Technical Support

For technical assistance, our U.S.-based technical support team is only a phone call away.

Call +1.330.486.0001, or visit our forum .


Pepperl+Fuchs Comtrol offers a 30-Day satisfaction guarantee and a 5-year limited warranty on all DeviceMaster DM family products!

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Extended Warranty Available

Software & Drivers
» Comtrol FTP Site