HL8012 Power/Energy Meter Breakout Board HL8012 Power/Energy Meter Breakout Board ACM HLW8012 ENERGY METER B/O BRD HL8012 POWER/ENERGY METER BREAKOUT BOARD. USES A 5 VOLT IC THAT MONITORS BOTH VOLTAGE AND CURRENT AND OUTPUT RMS VOLTAGE, CURRENT AND ACTIVE POWER, ENCODED AS A 50% DUTY CYCLE SQUARE WAVE WHERE THE FREQUENCY IS PROPORTIONAL TO THE MAGNITUDE Discontinued Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Features 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. Current used sample resistor is 2mR, 0.002R, 20A, 5% tolerance. According to application note, the power supply of hlw8012 must be not isolated. Videos