Energy Meter HLW8012 Breakout Board


Energy Meter HLW8012 Breakout Board Electric Power Consumption Module

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This module can measure 220v AC and measure current up to 20A as well as Active Power measurement. It is connected to the microcontroller via 3 wires and can be used with Arduino by using the HLW8012 Library.


  • Uses IC HLW8012 as the core for measuring pressure.
  • This module uses a voltage divider to measure the pressure which results in high accuracy
  • Uses Pulse Width Counter Communication with every microcontroller.
  • Please be careful when using 220V AC.

To connect the 220V AC cable, connect the hole specified on the module (please see image attached)

HLW8012 Datasheet















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