The is a 4-in-1 digital DC power monitor designed to measure voltage, current, active power, and energy consumption simultaneously on a large LCD screen. Typically used for solar systems, battery monitoring, and electric vehicles, it is rated for DC 6.5V to 100V and up to 100A (with an external shunt). Technical Specifications
Applied voltage must not exceed 100V. Applied current must not exceed the limit of the chosen shunt.
Long press the key until "SET" appears in the power area, then release.
| Data | Register Address | Data Type | | :--- | :--- | :--- | | Voltage | 0x0000 | Unsigned Int (x 0.1V) | | Current | 0x0001 | Unsigned Int (x 0.01A) | | Power | 0x0002 | Unsigned Int (x 0.1W) | | Energy | 0x0004 | Unsigned Int (x 1Wh) | peacefair pzem-051 manual
Press and hold the button until the power area displays "Curr". Release the button. Step 2: The screen will display either "50A" or "100A".
The shunt must be placed in series with the positive line (but see Step 5 below). Connect the positive output of your DC source (e.g., battery, solar charge controller, power supply) to one large terminal of the shunt. Then connect the other large terminal of the shunt to the positive input of your DC load (device or circuit you want to monitor). This forces all load current to flow through the shunt.
Ensure Pin 3 and Pin 4 are wired tightly to the correct sides of the external shunt resistor. Inaccurate or Erratic Power Readings Check for loose terminal block screws. The is a 4-in-1 digital DC power monitor
: The manual outlines how to set a high-voltage alarm threshold, which is a vital safety feature for battery monitoring. The Bad
The Peacefair PZEM-051 is a for DC systems (battery banks, solar arrays). While the hardware is solid, the manual requires careful reading due to technical translation gaps. 🛠️ Key Features & Specifications Measurement Range : DC 6.5V to 100V.
Peacefair PZEM-051 is a high-precision 4-in-1 digital DC multimeter commonly used as a "watchdog" for solar systems, electric vehicles, and battery management. It simultaneously monitors on a large, backlit LCD screen. Essential Technical Specs Operating/Test Voltage: 6.5V – 100V DC. Current Range: 0 – 100A (requires a compatible 50A or 100A shunt). Power Range: 0 – 10kW. Energy Range: 0 – 9999kWh. Class 1.0 (±1%). Manual & Operation Guide Applied current must not exceed the limit of
: If you hold the button again instead of short pressing, the reset is canceled. 3. High Voltage Alarm Threshold Settings
Passively wait 3 seconds to shift to the next digit.
Negative terminal of DC power supply (Power Input).
: The PZEM-051 can be used in various setups, such as monitoring battery banks in solar systems, RVs, and electric vehicles, where it helps track discharge and charge levels. The PZEM-051-USB variant also includes a USB interface for direct data logging to a PC.
