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  • PDM28

    The PDM28 is the newest PDM (Power Distribution Module) from Hardwire Electronics, the product of over 3 years of development and testing. 

    A PDM is a device used to replace conventional relays and fuses in a vehicle electrical system. The Hardwire Electronics PDM28 takes inputs from physical switches, analogue voltages, or the CAN bus, and provides power to different electronic devices such as radiator fans, fuel pumps and head lights. The current being drawn from each connected device is continuously monitored. If the measured current is too high due to a fault, the PDM switches off the respective output to prevent further damage to the wiring loom or the connected device. The PDM can then retry the output to see if the fault has cleared.

    • Product Details


      • PDM28
      • 2x DTM Connectors + Contacts
      • 2x DT Connectors + Contacts
      • 1x DTP Connector + Contacts
      • 2x Radlok Connectors
      • USB Flash Drive with Pro PDM Configurator Software and Instruction preloaded
      • 2m USB Cable
      • Printed A4 instruction manual
    • Technical Specification




      318x124x58 mm



      Operating Temperature

      -55 – 90C  [ -67 – 194 °F ]


      Machined Aluminium Enclosure, Media Blasted and Anodised Black

      IP Rating

      IP67 Water and Dust Ingress Protection


      2x 12-Pin DTM, 2x 12-Pin DT, 1x 4-Pin DTP

      Indicator LEDs

      50x RGB LEDs




      16 analogue inputs which can also serve as digital inputs.

      Measurement Range

      Each input can measure voltages between 0-28V, independent of the battery voltage.

      Measurement resolution

      16-bit or 0.001V

      Frequency Measurement

      Automatic frequency measurement up to 300Hz


      Fully protected for input voltages between  -24V to 40V.

      Pull Up/Down Resistors

      Each input has a software selectable 10K Pull-up or Pull-down resistor

      Added Features

      Configure as active high or low. Configurable Hysteresis voltage. Latching or momentary operation.




      4 high/low side outputs 100A peak, 30A continuous, with reverse current protection.

      6 high/low side outputs 80A peak, 20A continuous, with reverse current protection.

      18 high/low side outputs 80A peak, 20A continuous


      200A combined output maximum current

      Output current control steps



      Each output is overcurrent, overtemperature, load dump and reverse polarity protected.

      Soft Start

      PWM soft start can be enabled on outputs to limit inrush current.


      Each output can be Pulse Width Modulated based on a user defined variable. This can limit the speed of radiator fans, fuel pumps, and dim lights.

      1000Hz maximum PWM frequency

      Added Features

      Outputs can be configured to stay on for a specified time after the input is removed, useful for thermo-fans.

      Outputs can be retried multiple times after an over-current event is detected.

      LIN Bus


      1x LIN Bus Port. Currently unsupported, enabled in future software update

      CAN Bus



      3x CAN2.0A/B ports  (Bus 3 reserved for NIO Power Module Expansion)

      Bus Speed

      50, 100, 125, 250, 500, 1000 kbps

      Termination Resistor

      Both CAN bus ports have software selectable CAN termination resistors.

      Input Stream

      100x inputs, fully customisable variable parsing with bit masking, math functions, and compound CAN message filtering

      Output Stream

      100x Outputs, Fully customisable CAN frame construction with math functions

      CAN Keypad


      Support for Blink Marine, Grayhill, Motec, Haltech and Marlin CAN keypads.

      Up to four keypads can be used at once.




      128Mb of onboard flash storage for logging PDM data


      1Hz to 50Hz


      Data can be downloaded and graphed via the Hardwire Electronics PDM configurator software or exported as a .CSV file and graphed in external software



      Output Functions

      Each Output can be switched with a user defined function.

      Logical operators

      AND, OR, NOR, XOR, NAND, NOR, >, >=, <, <=, Equal, Not Equal.

      Maths Channels


      Fully customisable Maths Functions

      Mathematical Operators

      Mathematical Operators - Addition, Subtraction, Multiplication, Division, Modulus, Choose, Min, Max

      Binary Operators

      Binary Operators - AND, OR, XOR, Left Shift, Right Shift



      Configurable counters which increment, decrement, and reset based on user defined conditions




      3-axis rotational position measurement 0.1° resolution


      2000°/s 3-axis measurement


      -8g to 8g 3-axis measurement

      PCB temperature

      6-Zone PCB temperature measurement. 



      Real Time Clock with battery backup for 30 days. Used to store the correct time and date for data logs. 




      USB 2.0 compliant with Mini-B


      Integrated driver with Windows 10

      PC App



      Hardwire Electronics PDM configurator software.


      Windows 10 machines


      Easy connection to the PDM with USB and windows integrated drivers. No unreliable USB-serial converter needed.

    Excluding Sales Tax
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