A simplified logging system for low cost river level measurements. Taking readings from SDI12 pressure transducers, radar sensors and shaft encoders the L3 is ideally suited to providing a backup to existing primary measurement devices in gauging stations / measurement locations within range of a LoRaWAN gateway or Sigfox basestation

L3 Features

  • Embedded WiFi access point for simple data checks and data download
  •  Built in RTC to stay on schedule
  • Low power consumption
  • Easy installation (4 screws)
  • CSV file download


  • Size: 105 x 70 x 40mm (without antenna, glands)
  • Polycarbonate Body
  • IP66


  • –  868 MHz (Europe) at +14db maximum
  • –  LoRaWAN and Sigfox protocols
  • –  LoRaWAN, 16Km range to gateway
  • –  Sigfox, 20Km range to basestation

Readings and Data

  • 15 minute read frequency
  • Level data transmitted in real time vialicence free radio
  • Level and diagnostics data logged to SD card for future download
  • Automated Wiski database import


  • L3 automatically reads from:
    • GEMS (9 series), IMPRESS (SDI-12L)
    • OTT (PT’s SE200, PLS and Radar RLS)
    • Thistle 24R-150 Encoder