Power Line Monitor

Real-time monitoring of AC mains via sound-card capture.

Sign in for full history, the event log and audio downloads.

• Timeline →
  Voltage, frequency, events and audio on one zoomable time axis.
• Event log →
  Browse recorded sags, swells, high/low voltage and outages.
• History →
  Voltage and frequency over time, year to single-cycle zoom.
• Live scope →
  Streaming oscilloscope, spectrum, and waterfall view.