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

Engineering Drawing

Download Specifications
    • 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 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.

    View Pinout Diagrams

    • 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
    Find a Distributor

    » Industrial Distributors
    » North American Distributors
    » International Distributors

    Pre-Sales Questions

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

    +1-800-926-6876 (1-800-Go Rocket)
    Fax: +1-763-957-6001
    [email protected]

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

    +1-800-926-6876 (1-800-Go Rocket)
    Fax: +1-763-957-6001
    [email protected]

    DocumentDescriptionDownload File
    DeviceMaster ® RTS 16 LT User GuideContains detailed installation procedures and configuration information.
    Product Support and Service Information

    Part Number: 99581-4

    Sales Support

    Call +1.763.957.6000, or e-mail [email protected]

    Technical Support

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

    Call +1.763.957.6000, or visit our forum .


    Comtrol offers a 30-Day satisfaction guarantee and a 5-year limited warranty on all DeviceMaster RTS family products!

    View Warranty

    Extended Warranty Available

    Software & Drivers
    » Comtrol FTP Site