Overview

This multifunctional DC digital display meter is designed for accurate measurement and monitoring of voltage, current, power, and energy consumption in your DC systems. Equipped with a large LCD screen and backlight, it allows clear visibility of all key parameters at a glance, making it ideal for solar power setups, battery monitoring, DIY electronics, and automotive applications.

The meter features over-voltage alarm, and one-button energy reset, ensuring ease of use and reliable performance. With support for wide voltage input (8–100V DC) and multiple current ranges, it provides flexibility for both small and high-power DC systems.

Specification

Technical details for DC Digital Panel Mount Volt, Current and Power Meter Display.

Specification	PZEM-031	PZEM-051
Working Voltage	8–100V DC
Test Voltage	8–100V DC
Rated Power	20A / 2000W	100A / 10000W (Requires Shunt)
Measurement Accuracy	Class 1.0
Power Range	0–2kW	0–10kW
Energy Range	0–9999kWh
Voltage Range	8.00–99.99V
Current Range	0.00–20.00A	0.0–99.99A
Screen Size	51 × 30
Overall Dimensions	89.6 × 49.6 mm
Panel Body Size	84.6 × 44.6 x 24.4 mm
Mounting Cutout Size	86.6 × 46.6 mm

Connection Guide

1.PZEM-031

2. PZEM-051

Functions & Control

Backlight Control

Press the button briefly to turn the backlight ON or OFF. The backlight setting is automatically saved even after power is disconnected.

1. Energy Reset Function

Long press the button until “CLR” is displayed, then release.
The energy value will flash, indicating reset mode. Press again to clear the data.
If no button is pressed within 5 seconds, the data remains unchanged and the reset mode exits.

2. Voltage Alarm Setting

Long press the button until “SET” is displayed, then release.
Voltage area shows the current high alarm value; current area shows the low alarm value. Adjust digits with short presses.
Alarm setting range: 8.0V ~ 99.9V.
After saving, the display shows “PASS” and exits setup.

3. Range Selection

Long press until “CURR” is displayed, then release.
Switch between 100A and 50A using short presses. This corresponds to shunt types: 100A/75mV or 50A/75mV.
Exit setup by long pressing again or waiting 3 seconds; the setting is saved automatically.