Description:
The PZEM-004T-100A V3.0 is a high-precision AC single-phase multifunction energy monitoring module designed to measure and monitor electrical parameters in real time. It can accurately measure AC voltage, current, active power, power factor, frequency, and accumulated energy consumption, making it ideal for energy monitoring, smart home systems, industrial control, Arduino projects, and IoT applications.
This version uses an external split-core current transformer (CT clamp) capable of measuring up to 100A without requiring direct connection to the high-current line. The split CT design improves safety and makes installation easier because the clamp simply clips around the live wire.
The module supports the following measurements:
- AC Voltage: 80V–260V
- AC Current: 0–100A
- Active Power: 0–22kW
- Frequency: 45–65Hz
- Power Factor: 0.00–1.00
- Energy Consumption: 0–9999kWh
The PZEM-004T V3.0 communicates through a TTL serial interface using the Modbus-RTU protocol. This allows it to connect directly to microcontrollers and control systems such as Arduino, ESP32, STM32, Raspberry Pi, PLCs, and industrial controllers. The improved V3.0 version offers faster refresh rates, more stable communication, and higher accuracy than earlier versions.
The module has an accuracy class of 1.0, making it suitable for precise monitoring of household appliances, solar systems, battery inverters, generators, workshop machines, and energy management systems. It can continuously monitor the electrical consumption of a single-phase AC circuit and store the accumulated energy reading even after power is removed.
Typical applications include:
- Smart home energy monitoring
- Solar inverter and backup system monitoring
- AC appliance power measurement
- Workshop and industrial equipment monitoring
- Arduino and ESP32 electricity monitoring projects
- IoT energy management systems
- Power consumption logging
- Generator output monitoring
- EV charger and battery system monitoring
Because the module has TTL communication, you can integrate it into your own electronics projects. This may be especially useful for your electronics and automation projects, such as monitoring power consumption in your indoor farming systems, water dispenser manufacturing ideas, or future smart industrial equipment. You could connect it directly to an Arduino or ESP32 and send live power data to a display, mobile app, or cloud dashboard.
The module includes a compact protective enclosure and a detachable 100A split CT current transformer. It is designed for indoor use and should only be installed by someone familiar with AC mains wiring, since the voltage terminals connect directly to 80–260VAC mains.
Key Features:
- Measures voltage, current, power, frequency, power factor, and energy
- AC voltage range: 80V–260V
- Current measurement range: 0–100A
- Maximum power measurement: 22kW
- Energy range: 0–9999kWh
- Frequency range: 45–65Hz
- Power factor range: 0.00–1.00
- Accuracy class: 1.0
- Uses external 100A split-core CT clamp
- TTL serial communication interface
- Supports Modbus-RTU protocol
- Compatible with Arduino, ESP32, STM32, Raspberry Pi, PLC, and PC
- Faster refresh speed and improved stability in V3.0
- Stores accumulated energy data after power loss
- Includes protective case and CT clamp
- Suitable for indoor energy monitoring applications
Weight:
Approx. 20–70 g including the split CT clamp and enclosure.
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