Energy Meter HLW8012 Breakout Board

Rated 3.33 out of 5 based on 3 customer ratings
(3 customer reviews)


SKU: OPM1126 Category: Tags: , ,


  • Based on HLW8012, single phase energy monitor IC. SOP8 package and simple perpherial circuits.
  • Need to invasive to AC main power. VBe very careful when use it because of the HIGH AC voltage.
  • Output power, or current or voltage directly by frequency, which can be read by MCU like arduino.
    • Current sense by sample resistor
    • voltage sense by resistors net.
  • Board dimension is 40 x 23 mm.
  • Frequency read demo video please see here, and see demo code in wiki page.
  • Demo code (check in wiki page) support ESP8266 remote debug via telnet, safe to read data when mains AC power connected.\
  • According to application note, the power supply of hlw8012 must be not isolated, read more information on wiki page.
  • Most on board information please read on this page.


Additional information

Weight 0.005 kg

3 reviews for Energy Meter HLW8012 Breakout Board

  1. Rated 5 out of 5

    petergebruers (verified owner)

    Excellent! Item as described. Fast shipping. Would buy again!

  2. Rated 2 out of 5

    xtmp (verified owner)

    This URL from Description: “Most on board information please read on this page.” not working. Check it please.
    Can’t get working library. So get wrong Voltage measurement.
    Calibrate values, get:

    But it’s looks like that get voltage correct only on calibrated power. When power is 0 I have 0 voltage too.

  3. Rated 3 out of 5


    Hi, some documents are confidential better not open to view. I can not find your email address, please drop me an email for access page:

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