ZMPT101B AC Voltage Detection Sensor Module

The AC Voltage Detection Sensor Module measures AC (Alternating Current) mains voltage using a precision isolation transformer (a component that transfers a proportional signal from the AC side without electrical contact between the two sides). The zmpt101b voltage sensor outputs a safe analog voltage that your microcontroller reads through a standard ADC (Analog to Digital Converter) pin. It runs on 5V to 30V DC and operates at 50Hz, the standard Indian mains frequency.

The voltage sensor zmpt101b needs software calibration before readings become accurate. Raw ADC values from the output do not directly equal volts. The honest limitation is that without applying a scaling factor against a known reference voltage, readings drift by half a pH or more. Keep this step in mind before deploying.

The ac voltage sensor connects to Arduino IDE, PlatformIO, and ESP32 environments through the analog output pin. Electrical engineering students and energy monitoring makers use it for mains voltage sensing projects. To start, power the module, connect the analog output to an ADC pin, and read values in serial monitor. StemVolt supplies this module tested with confirmed 50Hz output response.

Features:

• Operating voltage from 5V to 30V DC connects directly to Arduino, ESP32, and industrial 24V systems
• Transformer isolation between mains and signal output keeps the microcontroller pins safe from AC line
• Analog output from the ZMPT101B chip maps AC waveform amplitude to a readable ADC voltage directly
• zmpt101b voltage sensor datasheet confirms single-phase AC measurement compatible with 230V Indian mains