Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	ZMPT101B
Input Voltage Range	AC 0-250V
Output Signal	Active AC Voltage
Phase Type	Single-Phase
Linearity Error	< 0.5%
Operating Frequency	50Hz / 60Hz
Supply Voltage	DC 5V
Interface Type	Analog Output Pin
PCB Dimensions	32mm x 24mm
Application	Smart Metering & Monitoring

6 reviews

Anonymous

Mar 20, 2026

Rating: 5/5

Low noise output

Impressed by how low the noise floor is on the analog output. Makes filtering in software much easier. Delivery was fast too.

Anonymous

Mar 19, 2026

Rating: 5/5

Perfect for Arduino Energy Monitors

This module works flawlessly with my ESP32 project. The signal is clean and the linearity is excellent across the tested range. Highly recommended for DIY smart home setups.

Anonymous

Mar 14, 2026

Rating: 5/5

Reliable for classroom projects

We bought ten of these for our electronics workshop. They are robust and safe for students to use when measuring mains voltage indirectly. Great purchase.

Anonymous

Mar 14, 2026

Rating: 4/5

Good value, needs calibration

The build quality is solid. You do need to calibrate it in your code to get precise readings, but that is expected for this type of sensor. Works as described.

Anonymous

Mar 06, 2026

Rating: 4/5

Does the job well

Using this to monitor solar inverter output. It handles the fluctuations well. Only wish the terminal blocks were slightly larger for thicker wires.

Anonymous

Mar 03, 2026

Rating: 5/5

Excellent accuracy

Compared readings against a multimeter and the deviation was negligible after basic calibration. Very happy with this sensor module.

5 FAQ

Q: What microcontroller boards are compatible with this sensor?

A: It is compatible with any board that has an analog input pin, such as Arduino Uno, Nano, ESP8266, and ESP32.

Q: Can this module measure DC voltage?

A: No, the ZMPT101B is designed specifically for Single-Phase AC voltage measurement only.

Q: Is isolation provided for safety?

A: Yes, the module uses a voltage transformer which provides galvanic isolation between the high-voltage AC input and the low-voltage output side.

Q: What is the maximum current this module can handle?

A: This is a voltage sensor, not a current sensor. It measures potential difference up to 250V AC; current draw from the circuit being measured is negligible.

Q: Does it come with a library for Arduino?

A: We do not provide a proprietary library, but there are many open-source libraries available online specifically for the ZMPT101B that work perfectly.

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