Product review (3 stars): Good for specific application
This unit is good for remote monitoring as it has a built in battery that allows is to function without a PC.  It does not function well as a PC connected unit as it does not use or charge from the USB port.  Reading temperature requires downloading data, which stops measuring.  The graphs, save to .xls or .txt are attractive features.  The application is a minimal load for the PC as opposed to the EL-USB-RT which can put a disruptively large CPU load.  There must be better options for monitoring temperature through a USB port for same room temperatures.