• Self-powered by built-in a chargeable Li-ion battery.
  • Split-core current transformer (CT) for easy installation.
  • Energy harvest from the CT induced electricity.
  • Uses 433 MHz radio frequency for communication.
  • 16 RF Channels and 4 Group ID, consist of maximum 64 RF sub-networks.
  • Supports maximum 400A CT and 1000A Rogowski current transformer(RCT).
  • Provides expansion interface for flexibility and expansibility.
  • Offers wall-mount mechanism and magnet for installation.


The iWSN series sensing module is a self-powered module for AC current, digital input and temperature measurement. It can harvest the demand electricity from CT induced current so that there is no necessary to supply the power line for power supply. By means of sub-1G RF communication interface, iWSN series can approach to the real wireless deployment. The diversified IO interface, such as split-core CT, Rogowski coil, NTC thermistor and dry contact DI, provides users more choices for various applications. Considering the maintenance and installation, the iWSN sensing module uses the DIP switch and rotary switch for configuration. Through the flexibility of the expansion interface and good price performance, the iWSN sensing module can be widely used in the application of saving power, big data analysis, and predict maintenance.



 Bus Interface
 Channels 1
 Type 4 pole 3.5mm audio cable with 25 cm wire lead


 EMS Protection
 EFT (IEC 61000-4-4) +/- 500 V
 ESD (IEC 61000-4-2) +/- 4 kV Contact


 LED Indicators
 Status 1 x Power
1 x STA


 Rogowski Coil Channels 1
 Rogowski Coil Type Φ80mm (1000A); 4 m wire
 Split-core CT Channels 1 (for charging only)
 Split-core CT Type Φ16mm (100A), Φ24mm (200A), or Φ36mm (400A); 8 m wire
 Input Voltage Maximum 500VAC, 50/60 Hz
 Accuracy ±3% or ±2A


 Channels 0 ~ 15 configured by DIP switch
 Group ID 0 ~ 3 configured by DIP switch
 Radio Frequency 433.1000 ~ 434.6000 MHz
 Transmission Power 9±1dBm (PA Off) / 18±1dBm (PA On)
 Transmission Distance (LoS) 100 m
 Node ID 1 ~ 31 configured by DIP switch
 Working Duty 1 sec, 10 sec, 30 sec and 60 sec configured by DIP switch


 Type 0 dBi Omni directional PCB antenna


 Consumption 1-sec Tx Duty: 11 A
10-sec Tx Duty: 3 A
30-sec Tx Duty: 3 A
60-sec Tx Duty: 3A
 Battery Li-ion battery (compliant with UL1642) charged by CT induced current


 Dimensions (mm) 85 x 152 x 25 (W x L x H)
 Installation Wall-mount or magnet adsorption


 Operating Temperature 0 °C ~ +45 °C
 Storage Temperature -20 °C ~ +50 °C
 Humidity 10 ~ 90% RH, Non-condensing



iWSN-110X-RCT1000P-CT     CR  iWSN Current Sensing Module with 1-ch RCT Input, 1-ch CT Input (Charge Only) and 1 Expansion Interface (RoHS) (Included 1000A RCT and 200A CT) 1