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  • Twin Link Wireless Analog Signal Transmitter Receivers

    Easily Transmit Signals up to 2.5 miles* [sold as pair]

    Twin Link Wireless Analog Signal Transmitter Receivers. Find out everything you need to know about the Define Instruments Twin Link in just 30 seconds with our quick video overview.
    Twin Link

    CUSTOMIZABLE PRODUCT: This product is available in custom configurations for OEMs and high volume orders (over 100 pieces). If you have a difficult application that requires our engineering input, please call 1-888-652-4757 so we can assist you.

    Price for Pair:
    • Repeater - $

      Point-to-Point Wireless Repeater Unit

        Out of stock. Pre-order available.
    • Bridge Key - $

      Universal USB Communications Kit

        Out of stock. Pre-order available.
    • Power Adaptor - $

      12V DC

        Out of stock. Pre-order available.

    What it does:
    Wirelessly transmits signals from point to point. Accepts 2 inputs from a range popular signal types and outputs 2x 4-20mA.

    Transmit signals up to 2.5 miles*

    When it’s just too far or too expensive to lay cable for signal communications, turn to Define Instruments Twin Link units. Twin Link uses wireless technology to communicate to and control devices over distances of up to 2.5 miles with Line Of Sight (*requires 12db aerial).

    Reach can be extended beyond this distance with the addition of a repeater unit. Repeater units can also be used to transmit around RF obstacles when line of sight is obscured.

    Out-of-the-box ready for 4-20mA I/O applications

    The pre-paired Point to Point units come “out of the box ready” for 4-20mA I/O applications but additionally can accept a huge variety of input types including mA, RTD and Frequency. Twin Link boasts 2 analog inputs plus 4 digital I/O switches. Channels are fully isolated and units are industrial strength.

    Transmits through walls

    The Twin Link will transmit through stud walls, brick and concrete, so if you need to get signals a few rooms away or up a floor or two, Twin Link can handle it. In interior applications range is 300-500ft through typical buildings and building materials.

    Easy 60 second set up

    Twin Link connects to a PC via USB – cutting configuration time to a mere 60 seconds.

    Saves money

    As Twin Link can be used to both transmit and control, it reduces costs by removing the need for separate units.

    License Free Frequency bands

    Twin Link runs at 2.4Ghz license free and FCC approved for US. Power output 20dBm / 100mW.

    In addition to this software a Bridge Key is required for the configuration of this product. You must order one unless you already have one from a previous product purchase.

    Compare analog signal wireless transmitters

    Brand & Model Input Output Range Technology Price
    Phoenix Contact 2867102
    4-20mA + digitals
    No programming required
    4-20mA 1000ft 902-928 MHz ISM band spread
    spectrum frequency hopping
    24V DC
    DX70 Banner
    4x 4-20mA + digitals
    RS485 programmable
    4-20mA 2 miles @ 2.4GHz
    3 miles @ 900MHz
    Zigbee 2.4GHz and Radio 900MHz
    Eaton 105U-L I/O Pair
    2x 4-20mA + digitals
    USB & RS485 programmable
    20 miles 869.525MHz/500mW or
    AC or DC
    Zigsense ZS-P2P-001
    2x 4-20mA + digitals
    USB & RS485 programmable
    4-20mA 300-400ft 300-400ft  $725
    2x Universal inputs + digitals
    USB Programmable
    4-20mA 2.5 miles
    Zigbee Low Powered
    9-36V DC
    2.4 GHz

    Prices checked Dec 12, 2016

    Everything You Need:

    • Input Node (P2P-I) 2x universal isolated analog input channels accepting Thermocouple, RTD, Process inputs (current & voltage), NPN/PNP open collectors, Potentiometer input, and AC current sensors
    • Output Node (P2P-O) 2x 4-20mA isolated analog outputs that are easy to scale to your desired range
    • Flexible IO Each of the Twin Link units also offers 4 digital inputs, 2 digital outputs, and 2 relay outputs, which are simple to program for a range of setpoint functions.

    Simple Setup Using Your PC

    Define ToolBox for P2P Configuration Setting up your wireless Point-to-Point system is fast and easy with Define ToolBox. Simply connect the Twin Link Input Node (P2P-I) to your PC via USB (Bridge Key required), and you'll be up and running in no time.

    Select from a wide range of pre-calibrated input types, easily scale your analog outputs, and configure your IOs for mimicking, alarms, and sophisticated remote control of other equipment.

    FCC 2ACTT-1409
    RCM R-NZ
    Universal Input
    Number of universal inputs
    2x isolated universal input channels (Input node)
    RF data rate
    RF frequency range
    RF transmission power
    +20dBm (10dBm selectable in soft ware for regions with transmission power restrictions)
    Transmission range
    Up to 0.9mi (1.5km) LOS with supplied antenna (WG-3DBI). 2.5miles with 12db aerial.
    All nodes must be set to full power (+20dBm) for max range. Transmission distance may be limited by regional power restrictions. In this case one or more Repeaters may be needed for your application.
    RF receiver sensitivity
    Number of RF channels
    Number of wireless nodes
    Up to 17 nodes per mesh (Twin Link plus up to 15 Repeaters)
    Spreading method
    Direct sequence
    Power supply
    9–36V DC, 2.5VA max
    1500V AC between power supply and input or output channels
    Thermocouple Input
    Thermocouple types

    J: -328 to 1832°F (-200 to 1000°C)
    K: -328 to 2300°F (-200 to 1260°C)
    B: 752 to 3272°F (400 to 1800°C)
    E: -328 to 1292°F (-200 to 700°C)
    N: -328 to 2372°F (-200 to 1300°C)
    R: 32 to 3092°F (0 to 1700°C)
    S: 32 to 3092°F (0 to 1700°C)
    T: -328 to 752°F (-200 to 400°C)
    Input impedance
    >500KΩ min
    T/C lead resistance
    100Ω max
    Cold junction compensation

    14 to 140°F (-10 to 60°C)
    CJC error
    <0.02°c typical for all dd>
    0.1% of FSO±1°C typical
    Sensor open
    RTD Input
    RTD input type
    3-wire RTD PT100 (DIN 43760:1980) or PT1000 (3-wire RTD standard)
    Calibrated ranges: -328 to 572°F (-200 to 300°C), 0.01°C res; -328 to 1472°F (-200 to 800°C), 0.1°C res
    Lead wire resistance
    10Ω/lead max recommended
    Sensor current
    0.6mA continuous
    Sensor fail
    (32–572°F) 0–300°C= ±0.1°C; (32–1472°F) 0–800°C= ±0.3°C
    Ambient drift
    0.003°C/C typical
    Current Input
    Input impedance
    Max over-range
    Protected by PTC to 24V DC
    Linearity & repeatability
    0.1% FSO max
    0.1% FSO max
    Channel separation
    0.001% max
    Ambient drift
    <50ppm °c of fs dd>
    Response time
    Voltage Input
    ±200mV, –200mV to 1V, 0–10V, 0–18V
    Input impedance
    500KΩ (all ranges)
    Maximum over voltage
    24V DC
    Linearity & repeatability
    0.05% FSO max
    0.1% FSO max
    Channel separation
    0.001% max
    Ambient drift
    Digital Pulse Input
    Frequency range
    Open collector (NPN, PNP)
    Frequency resolution
    Software modes
    General frequency, Flow rate, or RPM
    AC Current Sensor Input
    Sensor type
    Current transformer (ACCS-420/ACCS-010)
    Amperage range
    Header selectable 100/150/200A
    175/300/400A respectively (continuous)
    (Representing 0–100% of full scale input range)
    ACCS-420 = 4–20mA DC loop powered
    ACCS-010 = 0–10V DC
    Power supply
    ACCS-420: Loop powered, 15–36V DC
    ACCS-010: Self powered
    1% of full scale
    Response time
    250ms (10–90%)
    Isolation voltage
    Potentiometer Input
    Potentiometer input
    Excitation voltage
    Potentiometer resistance
    Low range (<2kω) or high range>2kΩ)
    Field programmable zero
    0–90% of span
    Field programmable span
    Linearity & repeatability
    <±0.05% fso dd>
    Response time
    Ambient drift
    <50ppm dd>
    Relay Output
    Number of relay outputs
    2 x relay outputs on each Twin Link node
    Relay output type
    Form A (5A 250V AC / 5A 30V DC)
    Isolated to sensor and user input commons
    Isolation test voltage
    2300Vrms for 1min. Working voltage 250V AC
    Life expectancy
    100K cycles min at full load rating
    Analog Output (Retransmission)
    Number of analog outputs
    2 x analog outputs (Output node)
    Analog output type
    Loop powered, isolated 4–20mA or 20–4mA DC
    Isolated to Digital IO GND
    Isolation test voltage
    1400Vrms for 1min. Working voltage 125V DC
    15 bits, 16000 steps
    Loop drop
    10V max
    Linearity & repeatability
    0.1% FSO max
    0.1% FSO max
    Digital I/O
    Digital inputs
    4 x digital inputs on each Twin Link node
    Max rate 1Hz. Selectable sink/source. Suitable for clean contacts, NPN, PNP and voltage inputs (low input <1.4v dc, high input 1.4–30v dd>
    Max continuous input
    20V DC
    Not isolated to power supply common
    Digital outputs
    2 x digital outputs on each Twin Link node
    Open drain (1A, 30V DC max)
    USB programmable
    Simple programming using Define ToolBox. Requires Bridge Key (sold separately).
    Modbus RTU
    Serial data rate
    9600 baud, 8-N-1
    35mm DIN rail mount casing. Installation Category II; Pollution Degree 2; Flame resistant
    Ingress protection rating
    IP20 - install in a protective enclosure
    Dimensions (H x W x D)

    Unit body: 3.98 x 0.91 x 4.72" (101 x 23 x 120mm)
    With included antenna: 5.91 x 0.91 x 5.75" (150 x 23 x 146mm)
    5.5oz (156g) with included antenna and plugs
    Environmental Conditions
    Operating temperature
    -4 to 131°F (-20 to 55°C)
    Storage temperature
    -4 to 149°F (-20 to 65°C)
    Operating humidity
    0–85% non-condensing
    2187yd (2000m)
    Certifications & Compliances
    FCC ID:
    47 Code of Federal Regulations; Part 15 - Radio Frequency Devices; Subpart C - Intentional Radiators, including Section 15.247 - Operation in the band 2400 –2483.5MHz
    AS/ANS 4268:2012

    Radio equipment and systems - Short range devices - Limits and methods of measurement
    ETSI EN 300 440-2, V 1.4.1, 2010

    Electromagnetic compatibility and Radio spectrum matters (ERM); Short Range Devices (SRD); Radio equipment to be used in the 1GHz to 40GHz frequency range; Part 2: Harmonised EN under article 3.23 of the R&TTE Directive
    EN 301 489-3 V1.6.1, 2013

    Electromagnetic compatibility and Radio spectrum Matters (ERM); Electromagnetic Compatibility (EMC) standard for radio equipment and services; Part 3: Specific conditions for Short Range Devices (SRD) operating on frequencies between 9kHz and 40GHz

    Twin Link Manual Twin Link Manual 17V01, 04-May-2017 | (2059 KB)

    P2P-I (Twin Link Input) Datasheet P2P-I (Twin Link Input) Datasheet 17V01, 28-Apr-2017 | (209 KB)

    P2P-O (Twin Link Output) Datasheet P2P-O (Twin Link Output) Datasheet 17V01, 28-Apr-2017 | (936 KB)

    P2P-R (Repeater) Datasheet P2P-R (Repeater) Datasheet 17V01, 28-Apr-2017 | (1092 KB)

    Twin Link Brochure Twin Link Brochure 14V01, 11-Nov-2014 | (666 KB)

    Twin Link Datasheet Twin Link Datasheet (17v01/0428), 04-May-2017 | (958 KB)

    Define ToolBox

    Define ToolBox

    Smart, simple software to program your non-Zen series products

    Use Define ToolBox software to program your non-Zen series product via your PC. It configures:

    It offers a simple interface for connecting to your compatible device, and a range of flexible configuration options, including an extensive library of pre-calibrated ranges and linearization tables for advanced scaling.

    P2P-TWIN-LINK Point-to-Point paired I/O units (P2P-I + P2P-O)
    P2P-R Point-to-Point wireless Repeater unit
    WG-PSU 12V DC power adaptor Not FCC approved.
    Sold separately
    Bridge Key USB Bridge Key and communications kit (required for software configuration) Not FCC approved.
    Sold separately
    Antenna Upgrades Click here for antenna upgrade options
    Define ToolBox Simple utility for setting up your Point-to-Point system Free download
    Twin Link

All prices are in US Dollars. For pricing in other currencies, please contact us.