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Enabling better global research outcomes in soil, plant & environmental monitoring.

AC-421 SDI-12 to USB Converter

The AC-421 enables easy programming of any SDI-12 sensor by simply connecting the sensor to a computer’s USB port. Configuration of the sensor can be done using any terminal program or Apogee Instruments DSI software.

One side of the AC-421 features a USB connection for plugging into a computer. The other side of the AC-421 has +12 V out, GND, and SDI-12 data channels for connection to any standard SDI-12 sensor (for proper operation, please connect the ground wire first).

  • Easily configure and take sample measurements from any SDI-12 sensor directly with a computer and GUI
  • No data logger needed
  • Growing library of sensors with commands explained
  • Sensor power provided via USB

Applications:

  • SDI-12 sensor configuration or programming
  • SDI-12 sensor troubleshooting
  • Field use
  • Research applications
  • Classroom labs