ZMPT101B AC voltage sensor for Arduino, ESP32, and Raspberry Pi

The ZMPT101B voltage sensor is a single-phase AC measurement module designed to safely monitor mains voltage, typically from 110 V to 250 V AC, with an analog output proportional to the measured voltage. Equipped with a high-precision voltage transformer and an operational amplifier, it provides good linearity and reliable readings for microcontroller-based projects such as Arduino, ESP32, and Raspberry Pi.

Main Features

• Measurement range: 0 to 250 V AC, ideal for 110–250 V mains voltage.

• Power supply: 5 V to 30 V depending on the module version.

• Output: adjustable analog signal with calibration potentiometer.

• High-precision ZMPT101B transformer with galvanic isolation for safer use.

• Compact module, suitable for embedded and IoT applications.

Project Examples

• Mains voltage monitoring with Arduino or ESP32.

• Smart socket and smart home power supervision.

• Automatic changeover or inverter control based on voltage thresholds.

• Energy monitoring systems when combined with current sensors.

• Training and educational electronics projects for AC voltage measurement.

Application Areas

• Home automation and IoT.

• Energy monitoring in homes, workshops, and small businesses.

• Electrical engineering and electronics training.

• Power quality measurement and supervision systems.