ZMPT101B Single Phase AC Voltage Sensor Module for Arduino, ESP32 & Mains Voltage Measurement

Description The ZMPT101B Single Phase AC Voltage Sensor Module is a precision solution for measuring AC mains voltage in embedded and IoT applications. It uses a high-accuracy miniature voltage transformer (ZMPT101B) combined with an onboard signal conditioning circuit to provide a safe, isolated, and stable analog output. Designed for single-phase AC systems, this module is ideal for monitoring household mains voltage, smart energy meters, power quality analysis, and automation systems. The onboard adjustable potentiometer allows easy calibration for accurate voltage measurement when interfaced with Arduino, ESP32, ESP8266, STM32, and Raspberry Pi (with ADC). Electrical isolation between the high-voltage AC input and the low-voltage output ensures safe operation in real-world power monitoring projects. �� Key Features Measures single-phase AC voltage Based on ZMPT101B precision voltage transformer Electrical isolation between AC mains and control circuit Analog voltage output for ADC reading Onboard calibration potentiometer High accuracy and stability Compatible with Arduino, ESP32, ESP8266, STM32 Ideal for energy meters, smart grids & IoT projects �� Technical Specifications Parameter Value Sensor Type ZMPT101B Measured Voltage Up to ~250V AC (RMS) Phase Single Phase Output Type Analog Supply Voltage 5V DC Isolation Transformer-based Calibration Onboard Potentiometer Frequency Range 50–60 Hz Operating Temperature -40°C to 85°C Interface 3-Pin (VCC, OUT, GND) �� Applications AC mains voltage monitoring Smart energy meters Power quality analysis Home automation systems IoT power monitoring Industrial automation