# AC voltage sensor module with transformer, ZMPT101B 2MA, adjustable amplitude

> AC voltage sensor module ZMPT101B with transformer and precision amplifier, for monitoring one phase in Arduino projects or other 5V boards with an ADC pin. Measures 0-250VAC and outputs an analog signal of 0-5VDC. Input/output current 2mA, galvanic isolation, potentiometer for calibration, power supply 5-30VADC.

- Page: https://sigmanortec.ro/en/ac-voltage-sensor-module-with-transformer-zmpt101b-2ma-adjustable-amplitude
- Price: 13.50 RON
- Availability: In stock; 1-2 zile
- Reference: 9534 · EAN: 5947086717833
- Category: Mechatronics and IoT > Sensors and Modules > Voltage and Current Sensors
- Specifications: tension: NEEDLE; Input Voltage Type: AC; Model: ZMPT101B
- Package (shipping data): 0.021 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 03:25 (Europe/Bucharest)

## Description

AC voltage sensor for monitoring a phase in Arduino projects and 5V boards, uses ZMPT101B transformer and precision amplifier to deliver on the ADC pin a 0-5V analog signal corresponding to 0-250VAC measurement. Includes potentiometer for quick calibration, provides galvanic isolation and operates on 5-30V supply.
AC voltage sensor (alternative) with ZMPT101B, compatible with Arduino and other development boards that operate on 5V and have an ADC pin available.
It can measure voltage on a single phase using a voltage transformer and a precision operational amplifier to transmit to the microcontroller an analog signal between 0 and 5VDC representing the measured voltage between 0 and 250VAC.
The integrated potentiometer allows the module to be calibrated by adjusting the output voltage.
Specifications:
Supply voltage: 5 - 30VADC
Measured voltage: 0 - 250VAC
Input current: 2mA
Output voltage: 0 - 5VDC
Output current: 2mA
Isolation: Galvanic
Output signal: Analog
Connection example: