The Peacefair PZEM-004T AC Energy Meter Module is a single-phase energy monitoring device that measures voltage, current, active power, frequency, power factor, and energy consumption. It supports 80–260 V AC and up to 100 A using the included CT coil. With TTL serial communication, it can be easily interfaced with Arduino, ESP32, Raspberry Pi, and other controllers. Ideal for home energy monitoring, IoT projects, industrial applications, solar systems, and smart metering.

The PZEM-004T V3.0 AC Single-Phase Energy Meter Module is designed to measure voltage, current, active power, energy, frequency, and power factor. It supports 80–260 V AC, up to 10 A current, and up to 2300 W power measurement. With TTL serial communication and Modbus RTU, it can be easily interfaced with Arduino, ESP32, Raspberry Pi, and other controllers. Ideal for IoT energy monitoring, smart homes, industrial automation, solar systems, and AC appliance monitoring.