Lantern Power Monitor vs SEM-Meter Usage & Stats

SEM-Meter installed in your power distribution box, monitors your household power usage and reports the power usage to you in real time. SEM-Meter also provides some valuable features： Historical energy use and conservation; Comparisons second-to-second, day-to-day, week-to-week, month-to-month, and year-to-year； Help you save on electricity bills.