Single Phase Voltage Mutual Inductor AC Active Output Module ZMPT101B 2M

The Single Phase Voltage Mutual Inductor AC active output module is an AC voltage sensor based on the ZMPT101B precision voltage transformer. It scales single-phase mains voltage, up to 250 V AC, down to a small analog signal that an Arduino, ESP32 or other microcontroller can read, while the transformer keeps the mains side isolated from your low-voltage circuit. It is used in energy meters, power monitors and over- or under-voltage protection.

Single Phase Voltage Mutual Inductor Specifications

• Sensor: ZMPT101B voltage transformer, 2 mA rated current
• Measuring range: single-phase AC up to 250 V
• Isolation: up to 4000 V between the mains side and the output
• Amplifier: onboard LM358 op-amp (active output)
• Output: analog AC waveform centred at half the supply voltage
• Calibration: multi-turn trimmer potentiometer to set the gain
• Module supply: 5 V DC

Single Phase Voltage Mutual Inductor Applications

• Measuring mains voltage with an Arduino or ESP32
• DIY energy and power meters together with a current sensor such as the SCT-013
• Over-voltage and under-voltage alarms and protection
• Monitoring generator and inverter output
• IoT home energy dashboards

What's in the Box

• 1 × ZMPT101B AC voltage sensor module

Tip: The AC input terminals carry mains voltage, which is dangerous: wire it with the power off, use an enclosure and never touch the board while it is live. Calibrate the reading against a multimeter with the trimmer and calculate the RMS value in code, for example with the EmonLib or ZMPT101B Arduino libraries.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.