Peacefair Pzem-051 Manual

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The Peacefair PZEM-051 is an inexpensive, compact DC/AC energy meter module commonly used for monitoring voltage, current, power, energy, frequency, and power factor in DIY solar, battery, inverter, and bench-test setups. It’s often seen in 12–48 V DC and single-phase AC projects paired with microcontrollers (Arduino, ESP32, Raspberry Pi) via a serial (TTL) interface. peacefair pzem-051 manual

| Parameter | Range / Value | | :--- | :--- | | Voltage Range | 6.5V – 100V DC | | Current Range | 0A – 100A (requires external shunt) | | Power Range | 0 – 10kW (100V * 100A) | | Energy Range | 0 – 9999 kWh (resettable) | | Display | 5-digit LCD with backlight | | Measurement Accuracy | ±1% (typical) | | Operating Temp | -20°C to +70°C | The Peacefair PZEM-051 is an inexpensive, compact DC/AC

Note: Always verify exact specs from your unit’s included datasheet, as revisions can vary slightly. Connecting the Meter:

Let’s wire a standard 12V or 24V battery going to an inverter.

Pro Tip: The thin yellow and white wires coming from the shunt are the signal wires. They are polarity sensitive. If your meter shows a negative current (e.g., "-5.0 A"), simply swap the wires on Terminals 3 and 4.