I wanted an ammeter, with whom I guzzlers - can track easily and exactly has made this instrument - in particular in the stand by mode. Between Plugged it shows immediately the power consumption, so that a constant current consumption even equal it was clear that performance. For devices with varying power - eg notebook in various sleep states or DSL router with WLAN on or off - you can specifically test the individual power consumption yes.
Additional functions such as long-term measurement for accurate power consumption, memory or conversions do not interest me. So much mental arithmetic I trust me too, if I want to know what cost me a specific device. But for me the direct comparison and accurate measurement is important and both gives me this compared very reasonably priced device. Simply tuck, read and done! Nothing programming and no complicated operating sequences. Exactly what I wanted.
Conclusion: After a sweeping blow in my house with measurements on numerous power consumers me the meter has done great services and debunks some power-hungry. 5 Stars!