This module is a part of the NetHomeServer. The CULTransceiver is an interface module for the CUL USB radio transceiver. The CUL transceiver is sold by BusWare. The NetHomeServer project has custom firmware designed for CUL which works with the CULTransceiver.
To use the CULTransceiver USB-drivers has to be installed for the Windows operation system. Instructions for this is located here.
You also have to install the NetHome firmware on the CUL-device and this is described here.