Peacefair Pzem-051 Manual -

: Wait 3 seconds without pressing anything to shift to the next digit.

Proper wiring is critical to avoid damaging the meter or your circuit. The

Connect the two small terminals on the shunt to the corresponding current measurement ports on the meter.

The PZEM-051 usually has one or two tactile buttons: peacefair pzem-051 manual

What are you building? (Solar setup, RV, battery bank?)

: Short press the button once to clear the energy data to zero. The display will stop flashing.

Connect a thin wire from the load side of the shunt to the negative input terminal on the meter. Key Functions and Operation : Wait 3 seconds without pressing anything to

Toggles the blue LCD backlight on or off. The device saves this state when powered down. 2. Reset Energy (Wh/kWh)

[ Positive (+) Power Source Line ]--------------------------> To Load (+) | [Pin 1: Volt +] [Pin 2: Volt -] | [ Negative (-) Power Source Line ]----*---> [ Shunt Box ] ---> To Load (-) | | [Pin 4] [Pin 3] Safety Rules This module is strictly for indoor use. Applied load must not exceed the rated power (10 kW).

: Press and hold the button for 5 seconds to save your limits and exit. Troubleshooting Common Issues The LCD Screen Does Not Turn On Verify the voltage source is at least 6.5V DC. Check for reversed polarity on Pin 1 and Pin 2. Current Reading Displays Zero (0.00A) Under Load Check the shunt connection. The PZEM-051 usually has one or two tactile

The PZEM‑051 package contains the meter itself and an external current shunt (typically rated 50 A or 100 A). The shunt is a small metal block with two large terminals for the main current path and two smaller terminals for the sensing wires.

Displays as 0 to 9999Wh under 10kWh, and 10 to 9999kWh above 10kWh.

This indicates an alarm condition (voltage too high/low or power over threshold). Check your settings.

Wait 10 seconds without pressing anything to exit without resetting. 3. Set Voltage Alarm Thresholds