In order to upgrade the flexibility and expansibility of iWSN sensing module, the iWSN expansion module is developed to connect to the iWSN sensing module. By means of iWSN expansion modules, the iWSN sensing module can offer more current and temperature measurement channels. The iWSN expansion module is energized by iWSN sensing module so that there is no external power supply needed. For convenient setting up and maintaining the application, the iWSN expansion module provide removable screwed terminal block, wall-mount mechanism and magnet adsorption for installation, and also allows connecting different measurement range of CTs to fit various applications. More kinds of IO interface will be designed to rich the iWSN functionalities and unleash the power of iWSN sensing modules.


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    • Supports multi-channel IO expansion
    • Allows connecting different measurement range of CTs in one expansion module
    • Powered by iWSN sensing module
    • Removable screwed terminal block for easy maintenance
    • Offers wall-mount mechanism and magnet for installation

    Hardware Specifications

    Models iWSN-750P
    Split-core CT Channel Number
    Split-core CT Type
    Φ16mm (100A), Φ24mm (200A), or Φ36mm (400A); 8 m wire
    Input Voltage
    Maximum 500VAC, 60 Hz
    ±3% or ±0.3A
    Input Type
    iWSN sensing module provides power through the audio line.
    Power Consumption (Included iWSN-1110X)(*1)
    1-sec Tx Duty
    19 A
    10-sec Tx Duty
    12 A
    30-sec Tx Duty
    11 A
    60-sec Tx Duty
    11 A
    Fire Retardant Materials
    Dimensions (L x W x H)
    115 mm x 72 mm x 35 mm
    DIN-rail or magnet adsorption
    Operating Temperature
    0 °C ~ +45 °C
    Storage Temperature
    -20 °C ~ +50 °C
    Relative Humidity
    10 ~ 90% RH, Non-condensing
    (*1) The minimum current required in the AC cable for balancing module’s power charging and power consumption

    Ordering Informations

    iWSN-750P CR
    iWSN expandable sensing module(ROHS)
    Important Note:

    1. The iWSN series expansion module needs to be used with iWSN sensing module. Users can refer to the iWSN-1110X or iWSN-1120X series module according to their needs.

    2. The iWSN sensing module measurement information must be collected through the iWSN receiver. Users can refer to the iWSN-2200 or iWSN-2200-E module according to their needs.