Hereâ€™s a perfect gadget for monitoring and storing the wattage being used on all your appliances. The Wattâ€™s Up Pro instantly records and displays 18 other values including the average monthly cost into a non-volatile memory.
The Wattâ€™s Up Pro features a USB interface that can store of up to 1700 complete records or over 32,000 if just recording watts. The Wattâ€™s Up Pro also comes with a user selectable logging interval and software that automatically graphs all recorded data with integrated analysis tool.
– $129.99 at thinkgeek