PZEM-004T AC Energy Meter

AC voltage, current and energy module for smart meter FYP projects.

Energy MeterRM25-RM60Advanced

Arduino ✓ESP32 ✓

Use PZEM-004T in my FYP View related FYP titles

PZEM-004T AC Energy Meter electronics module illustration

AI Ready Overview

Quick Summary

PZEM-004T is a energy meter commonly used in FYP and embedded projects. It is best for smart energy meter and appliance monitoring, with wiring and testing planned around Arduino, ESP32.

Difficulty

Advanced

Time Required

2-4 weeks for wiring, library setup, calibration, integration and reliable demo testing

Cost

RM25-RM60 module range in Malaysia; full project cost depends on scope.

Components

PZEM-004T, Arduino, ESP32

Overview

What is PZEM-004T?

PZEM-004T is used for AC energy monitoring projects. It can measure voltage, current, power and energy, but mains wiring must be handled safely.

Engineering Reference

Quick Specs

Operating Voltage	5V module / AC measurement terminals
Interface	UART
Difficulty	Advanced
Typical Malaysia Price	RM25-RM60
Best For	Smart energy meter, Appliance monitoring

Real Usage Notes

Suitable / Not Suitable

Suitable for

✓ Smart energy meter
✓ Appliance monitoring
✓ Power dashboard

Not suitable for

✕ Unsafe exposed mains demos
✕ Battery DC measurement
✕ Beginner wiring without supervision

Build Planning

Difficulty

PZEM-004T is rated Advanced. Plan around 2-4 weeks for wiring, library setup, calibration, integration and reliable demo testingdepending on wiring, libraries, calibration, dashboard/app integration and testing evidence.

Build Planning

Time Required

2-4 weeks for wiring, library setup, calibration, integration and reliable demo testing

Malaysia Price Guidance

Cost

Typical module price range: RM25-RM60. This is component guidance only; a complete FYP cost depends on controller, sensors, casing, display, app/dashboard, documentation and timeline.

Connections

Connection overview

Module revisions can use different connector names and electrical limits. Treat this as a planning overview and verify the exact board marking, manufacturer datasheet and seller documentation before wiring.

Power

Use only a supply supported by the exact board or module variant. Common listings for this part mention 5V module or AC measurement terminals.

Ground

Connect a common ground between the controller, module and any external supply.

Primary interface

Plan for UART; confirm the exact terminal names in the manufacturer documentation.

Variant-specific connections

Connector names and optional pins can differ between breakout-board revisions.

Platform Notes

Wiring Guides

PZEM-004T with Arduino / ESP32

This is a planning overview, not a board-specific pin map. Confirm the exact module revision, supply limits and UART terminals in its datasheet before wiring. Use suitable level shifting when logic voltages differ.

Power	Confirm against the exact board; listed variants commonly use 5V module / AC measurement terminals
Ground	Common ground with the controller
Interface	UART (exact pins vary by module)

Fix Common Problems