Part: ZMPT101B Voltage Sensor Module

Type: Voltage Sensor Module

Description: A voltage sensor module based on the ZMPT101B voltage transformer, capable of measuring AC/DC voltages up to 250V with 1% accuracy, providing analog and digital outputs.

Operating Conditions:

• Supply voltage: 5V
• Operating temperature: 40°C ~ + 70°C
• Input Current Range (transformer): 2mA - 10mA

Absolute Maximum Ratings:

• Max input voltage: 250V (AC)
• Breakdown voltage (transformer): Up to 4kV

Key Specs:

• Operating Voltage: 5V
• Maximum Input Voltage: 250V (AC)
• Turn Ratio (transformer): 1:1
• Input Current Range (transformer): 2mA - 10mA
• Operating temperature: 40°C ~ + 70°C
• Accuracy: 1%
• Analog Output Range: 0 to 1023 (for Arduino ADC)

Features:

• High galvanic isolation
• Wide Range
• High accuracy
• Good Consistency
• Built with LM358N IC chip
• Compatible with Arduino

Applications:

• Electrical energy meters
• AC Voltage measurement
• Household electrical equipment
• Industrial apparatuses
• Electrical testing equipment
• Power monitoring
• Home automation
• Smart energy meter management
• System analysis

Package:

• Module (4-pin: VCC, OUT, GND, GND)

• Electrical energy meters
• AC Voltage measurement
• Household electrical equipment
• Industrial apparatuses
• Electrical testing equipment

Interfacing ZMPT101B Voltage Sensor Module with Arduino

Here is a connection diagram that can be used to interface the sensor with the Arduino

Connect the VCC, GND,& OUT pin of ZMPT101B to 5V, GND, & A0 of Arduino respectively.

ZMPT101B Pinout

Package: 4-pin DIP (Dual In-line Package) / PCB-mounted

Notes

• Configurable winding assignment: The ZMPT101B is a current-type voltage transformer with dual-purpose pins. Pins 1–2 can serve as either primary input or secondary output, and pins 3–4 can serve as the complementary winding, depending on application configuration.
• Polarity marking: Pins marked with "*" (pins 1 and 3) indicate same polarity and should be connected to the same reference potential when used as a pair.
• Rated specifications: 2 mA rated current (both primary and secondary), 1000:1000 turns ratio, 4000 V isolation voltage.
• Pin length: Pins must be >3 mm for PCB mounting; not suitable for wave-soldering due to ABS case material.
• Typical usage: Primary input on pins 1–2 with secondary output on pins 3–4 (or vice versa). Secondary output is typically connected through a sampling resistor (R) to ground, with optional limiting resistor (R') on the primary side.