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The ZMCT103C 5A Range Single-Phase AC Current Transformer Sensor Module is a compact and highly accurate AC current sensing module designed for measuring single-phase alternating current up to 5A. Built around the precision ZMCT103C micro current transformer, it provides an isolated analog output proportional to the measured AC current, making it ideal for energy monitoring, power measurement, overload detection, and smart metering applications.

The module features an onboard precision amplifier and signal conditioning circuit that enables reliable current sampling with excellent linearity and electrical isolation. It can be easily interfaced with popular microcontrollers such as Arduino, ESP32, STM32, Raspberry Pi (via ADC), and other embedded systems for real-time current monitoring. Its compact size, adjustable output, and low-cost design make it suitable for DIY projects, industrial automation, home energy management, and IoT-based power monitoring solutions.

Features

Based on the ZMCT103C precision AC current transformer for accurate current sensing.
Measures single-phase AC current up to 5A.
Provides an analog output proportional to the measured AC current.
Galvanic isolation between the AC line and measurement circuit for improved safety.
High linearity with typical 0.2% linearity error.
Onboard signal conditioning circuit with sampling resistor for stable measurements.
Suitable for 50Hz/60Hz AC mains applications.
Compact PCB design for easy integration into embedded systems.
Compatible with Arduino, ESP32, STM32, Raspberry Pi (via ADC), and other microcontrollers.
Ideal for energy monitoring, smart meters, power monitoring, overload detection, and industrial automation.