Power you can actually measure.

LP405 25A smart plug with energy monitor

Aulifants builds hardware for people who care where the watts go. Our LP405 is a 25 A smart plug with real-time energy metering, triple-rate time-of-use billing and offline data logging — designed for air conditioners, space heaters and other loads that ordinary 15 A plugs were never built for.

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Why the LP405 is different

  • 25 A heavy-duty switching. A magnetic latching relay rated for high-inrush loads, with over-voltage, under-voltage and overload protection built in.
  • Metering you can trust. Live voltage, current, power factor and accumulated energy to 0.01 kWh — plus electricity cost calculated from three time-of-use rates.
  • Works when the cloud doesn’t. Local buttons keep switching without Wi-Fi, and usage history is written to an SD card so nothing is lost during an outage.

Support that answers

Setup guides, the full manual, firmware notes and warranty registration live here — not buried in a marketplace help centre.

Go to support