Disclosed are exemplary embodiments of environmental monitoring devices for monitoring one or more environmental conditions (e.g., temperature, humidity, carbon dioxide, oxygen, pressure, etc.) of storage units, such as storage units for vaccines, medications, and other climate sensitive products, etc. Also disclosed are exemplary methods of selectively configuring an environmental monitoring device for wireless communication by selectively connecting a communication module, from a plurality of different wireless communication modules, with an expansion port/connector of a printed circuit board of the environmental monitoring device. Further disclosed are exemplary methods of copying a configuration of a first environmental monitoring device to at least one or more other more environmental monitoring devices over a wireless communication link.