This module is basically a breakout board for HLW8032 IC which is a high precision Energy Metering IC. The HLW8032 IC uses a CMOS manufacturing process and is primarily intended for single phase applications. It can measure line voltage and current, and can calculate active power, apparent power and power factor.

Following features have been updated in the R2 version of HLW8032 Energy Meter module 

• Default use capacitive dropper method as non-isolation AC-DC power supply, supply current up to 100mA. Add fuse and varistor general protection.
• HLW8032 energy measurement on board one side, and ACDC power supply on other side
• Previous ACDC power supply method MP150 is still also available, current supply up to 200mA, further improve reliablility.
• Add jumper between AC-DC power supply and supply for HLW8032. So now you can test HLW8032 with your lab power via jumper pin header.

The device integrates two ∑-Δ ADCs and a high-precision energy metering core. The HLW8032 can communicate data through the UART port. The HLW8032 uses a 5 Volt supply, a built-in 3.579 MHz crystal, and an 8 PIN SOP package.

The HLW8032 Energy Meter Module has the advantages of high precision, low power consumption, high reliability and strong adaptability to the environment. It is suitable for energy metering of single-phase two-wire power users.

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Features of HLW8032 Energy Meter Module

• Based on official design, on board HLW8032 measurement circuits.

• All standard sensing parts, 4x 470K resistors for input voltage, 2mR sensing resistor for current.

• No need calibration, output data baudrate 4800. Output register value instead of pulse of HLW8012.

• On board AC-DC power supply circuits MP150 for HLW8032, offer about 60mA current. No need extra AC-DC circuits or unit to power it up.

• Fully isolated output, safe to use, output pins GND, M_RX, M_PF, VCC. Output RX includes voltage, current, power used, pluse, etc.

• Input Terminal, please notice is is L(Live), L(Live), N_LOAD (Neutral for load), N (Neutral), please notice it is NOT two pairs. Terminal pitch 5.08 mm.

• Cable terminals are included not soldered.  Current version cable terminal is pre-soldered on board

Applications of HLW8032 Energy Meter Module