A Data Module refers to any of the Stackable Data Modules offered by Weeder Technologies. These are small low-cost Data Acquisition and Control modules which can be daisy chained together and connected to a single communications port of a PC or Laptop. Because these modules are stackable, allows the user to select any combination of features needed for their application, and to expand with additional features when necessary. The Data Modules are offered in two different footprints as shown below, enclosed in a case with full electrical isolation, or a non-isolated bare OEM circuit board. Both versions can be connected together if desired.