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+61 3 8706 5000


+49 (0)4821 4370343

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+31 (0)180 463411

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+31 (0)85 0436000

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+31 (0)20 4940840


+65 68 72 08 63

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OMC-044 GPRS/4G Data Logger

The OMC-044 data logger is a small, rugged, ultra-low, power device. It is specifically designed for remote areas without main power. The datalogger is embedded with GPRS/4G LTE-M modem.

The logger has an internal temperature sensor and has slots for an 8 or 16 GB SD card and for a SIM card. It provides seamless interfacing to all meteorological and hydrological sensors from Observator Instruments and many more brands. It supports RS232, ModBus, SDI-12, NMEA and so on. Thresholds can be defined on all parameters. If a parameter exceeds its threshold, an alarm is generated. The data stored on the SD card can be transmitted periodically.  The logger can be configured using USB or remotely over TCP.

The OMC-044 is available with several housing options:

  • With a blind cover
  • With an integrated solar panel
  • With an integrated touch screen display


  • Analog in: 2x 4..20mA, 2x 0-10V, 1 x potmeter*
  • Digital in: 3x switch or pulse counter inputs
  • Serial: 1x RS-232 or RS-485/Modbus or SDI-12*
  • Serial: 1x RS-232 accessory*
  • Current consumption at 3.6V: 50 mA active, 300 mA transmitting, less than 100 µA sleeping
  • 1x [email protected] switchable sensor power out
  • Remote configuration possible using TCP
  • Integrated antenna
  • External antenna is optional

* Depending on the input configuration