How to choose a filter or module?

[Brian H]

The Kill A Watt also only measures to 15 amps and 1875 watts. 125Vx15A=1875W

If you don't need voltage; frequency; power factor; VA or want a reading of accumulated power use of a device over time in KWH. The one you are looking at will give you the current draw and the wattage. Also looks quite compact and easy to move around.