PZEM Monitor Gives Bare Power Meters a Desktop Interface

Field notes

The stated workflow runs from a serial-connected PZEM module to a native desktop display, configurable CSV logging, and threshold-based notifications. The page specifies twice-per-second polling and lists measurements including power factor and frequency. A particularly unusual feature is the claimed email return path: sending “PZEM STATUS” to the computer can produce readings and a screenshot without exposing the machine through VPN or port forwarding. The product page lists builds for Windows, macOS, and Ubuntu-based Linux.