Review on P3 P4400 Electricity Usage Monitor by Nicholas Serafini

The standard by which all other power meters are measured. Don't go wrong with any of these, buy one. At least I thought you couldn't go wrong. But I just hooked mine up to a 110V AC source coming from an inverter in a solar PV array and the "modified sine wave" seems to have fried it right away. Now he's dead as a doornail. So this is a little Easter egg for those who actually read device reviews with tons of reviews. Beware of use with modified (cheap) inverters. Worked well with my pure sine wave inverter. I wish there were instructions indicating that this requires a pure sine wave.