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Dataloggers · Software

GeoNet Cellular Loggers + Data Hosting System | Model 8920 Series

  • The Model 8920 Series includes the Cellular Addressable Logger, Cellular VW Logger and Cellular Tilt Logger (top, left to right),  and the 4- and 8-channel 
Cellular VW Loggers (bottom, left to right).
  • The Model 8920 Series Cellular Addressable Logger, Cellular Tilt Logger and Cellular VW Logger (left to right).
  • The Model 8920 Series 4- and 8-channel Cellular VW Loggers.
  • Typical Model 8920 Cellular Logger setup with cloud integration and secure data access vis Vista Data Vision software.
  • Agent software screenshot showing live data charts.
Model 8920 Series

The Model 8920 Series Cellular Loggers add stand-alone, cellular options to the GeoNet family of wireless data acquisition systems. The Model 8920 Series is ideal for smaller networks with a limited number of sensors, high-traffic areas (i.e. areas with radio interference), dense urban environments and areas with no line-of-sight between loggers. The Model 8920 Series can be added to a site with existing GeoNet 8800 Series and/or GeoNet 8900 Series Wireless Data Hosting Systems allowing additional loggers to be placed in locations beyond the range of existing mesh networks. The Model 8920 Cellular Loggers are easily deployed and ready for data acquisition, which may commence within minutes after installation as no SIM card nor cellular provider activation are necessary. The Model 8920 Series comprises single- and multichannel Cellular VW Loggers and Cellular Addressable Loggers to read all GEOKON vibrating wire and addressable sensors, respectively. Self-contained Cellular Tilt Loggers are also available, for attachment to structures, to wirelessly measure any tilting that may occur. The multichannel Cellular VW Loggers expand the capacity at each logger, allowing clusters of closely spaced sensors or vibrating wire load cells, multipoint borehole extensometers or multilevel piezometers to be added to the system. The system is compatible with all GEOKON Vibrating Wire instruments, addressable¹ sensor strings and addressable thermistor strings. The cellular loggers collect their respective sensor data and provide seamless and secure cloud integration via the Internet and GEOKON OpenAPI. Data visualization software, including Vista Data Vision and the no-cost GEOKON Agent Software can be used with GEOKON OpenAPI. In addition, GEOKON OpenAPI allows users to activate loggers, change settings, configure sensor channels, and view current logger status.

¹Addressable MEMS, VW and Thermistor strings.


VW Frequency Range¹
400-5000 Hz
Scan Interval¹
10-1440 Minutes
Tilt Range²
Power Supply
Mains power or solar
Operating Temperature
−40°C to +85°C (range varies by power source)
L × W × H
120 × 122 × 91 mm (single-channel/addressable/tilt loggers)
160 × 260 × 91 mm (4-channel logger)
180 × 280 × 101 mm (8-channel logger)

¹Cellular VW and Addressable Loggers.
²Cellular Tilt Loggers.

Please Note: GEOKON maintains an ongoing policy of design review and reserves the right to amend products and specifications without notice. Various instruments are discontinued over time and replaced with new, updated models.