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). Photograph courtesy of GEOKON GEOKON of Lebanon, N.H., released Model 8920 Series Cellular Loggers with stand-alone cellular options for the GeoNet family of [...]