Description
ZMPT101B AC Voltage Sensor Module – Single Phase 250V
The ZMPT101B AC Voltage Sensor Module is a compact, transformer-isolated single-phase AC voltage sensing module designed for Arduino, ESP32, ESP8266, STM32 and other microcontroller projects. It is commonly used for AC voltage monitoring, smart energy meters, IoT-based energy monitoring and embedded electronics applications. The module features a ZMPT101B precision voltage transformer and an onboard signal-conditioning circuit that provides an adjustable analog output. With appropriate calibration and software processing, microcontrollers can calculate RMS AC voltage.Key Features
- Single-phase AC voltage measurement up to 250V (module dependent)
- Precision ZMPT101B voltage transformer
- Transformer-isolated voltage sensing circuit
- Adjustable analog output using onboard potentiometer
- Integrated operational amplifier for signal conditioning
- Typically operates using a 5V DC supply
- Compatible with Arduino, ESP32, ESP8266 and STM32 with suitable ADC interfacing
- Compact design for embedded systems and DIY electronics projects
- Suitable for smart energy monitoring and voltage fluctuation detection
Technical Specifications
| Specification | Details |
|---|---|
| Model | ZMPT101B |
| Product Type | AC Voltage Sensor Module |
| Measurement Type | Single-Phase AC Voltage |
| Voltage Measurement Range | Up to 250V AC (module dependent) |
| Operating Voltage | Typically 5V DC |
| Output Type | Adjustable Analog Signal |
| Sensor Element | ZMPT101B Voltage Transformer |
| Signal Conditioning | Onboard Operational Amplifier |
| Adjustment | Potentiometer |
| Isolation | Transformer-Based Galvanic Isolation |
| Compatible Controllers | Arduino, ESP32, ESP8266, STM32 |
| Application | AC Voltage Monitoring and Measurement |
Applications
- Arduino-based AC voltage measurement
- ESP32 IoT energy monitoring projects
- Smart energy meters
- Home automation monitoring systems
- AC voltage fluctuation detection
- Electrical parameter monitoring
- Engineering mini and final-year projects
- Embedded systems research and prototyping
How Does the ZMPT101B Voltage Sensor Work?
The ZMPT101B sensor uses a precision voltage transformer to sense an AC voltage waveform. The onboard amplifier processes the transformed signal and provides an adjustable analog output suitable for microcontroller ADC sampling. By sampling the waveform and applying proper calibration, the connected microcontroller can calculate RMS AC voltage.Frequently Asked Questions
Can the ZMPT101B sensor measure 230V AC?
Many ZMPT101B modules are designed for AC voltage measurement up to 250V. Verify the actual module rating and provide appropriate electrical protection before connecting to mains voltage.
Is the ZMPT101B compatible with ESP32?
Yes. The ZMPT101B can be interfaced with ESP32 controllers, but its output must remain within the ESP32 ADC’s safe input voltage range.
Can I use the ZMPT101B with Arduino Uno?
Yes. The analog output can be connected to an Arduino Uno analog input when the module is correctly powered and wired.
Does this module measure AC current?
No. The ZMPT101B is intended for AC voltage measurement. A separate current sensor is required for current measurement.
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