ZMPT101B AC Single Phase Voltage Sensor Transformer Module Documentation

Input Voltage Range

80V - 280V AC

Output Voltage Range

0-5V DC

Accuracy

1% (full scale)

Resolution

10mV

Operating Frequency

50/60Hz

Power Consumption

approximately 0.2W

Operating Temperature

-20C to +70C

Storage Temperature

-40C to +125C

Dimensions

30.5mm x 20.5mm x 14.5mm

Pinout

The module features a 5-pin interface with the following pinout
VCC (5V)	Power supply pin

GND

Ground pin

Overall, the ZMPT101B AC Single Phase Voltage Sensor Transformer Module is a reliable and accurate voltage sensing solution for a wide range of IoT applications. Its compact design, simple interface, and low power consumption make it an ideal choice for developers and engineers working on voltage monitoring and control systems.

VIN

Input AC voltage pin

VOUT

Analog output voltage pin

Pin Configuration

ZMPT101B AC Single Phase Voltage Sensor Transformer Module
The ZMPT101B is a compact AC single-phase voltage sensor transformer module designed for measuring AC voltage in IoT applications. The module features a simple and robust design, making it easy to integrate into various projects. Here's a detailed explanation of each pin and how to connect them:
Pinout:
1. VCC (Red Wire)
Function: Power supply input
Description: Connect to a stable 5V DC power source
Note: Ensure the power supply is regulated and filtered to avoid noise interference
2. GND (Black Wire)
Function: Ground connection
Description: Connect to the system's ground or negative terminal
3. VOUT (Yellow Wire)
Function: Analog output voltage
Description: Connect to an ADC (Analog-to-Digital Converter) or a microcontroller's analog input pin
Note: The output voltage is proportional to the input AC voltage (0-230V)
4. NP (Neutral/Reference)
Function: Neutral or reference connection
Description: Connect to the neutral wire of the AC power source or a reference point
5. L (Line/Hot)
Function: AC voltage input
Description: Connect to the hot wire (live wire) of the AC power source
Connection Structure:
To connect the ZMPT101B module, follow this step-by-step guide:
Step 1: Power Supply Connection
Connect the VCC (Red Wire) to a 5V DC power source (e.g., a USB port, a battery, or a wall adapter)
Ensure the power supply is regulated and filtered to avoid noise interference
Step 2: Ground Connection
Connect the GND (Black Wire) to the system's ground or negative terminal
Step 3: Analog Output Connection
Connect the VOUT (Yellow Wire) to an ADC or a microcontroller's analog input pin
Ensure the ADC or microcontroller can handle the output voltage range (typically 0-5V)
Step 4: AC Voltage Input Connection
Connect the L (Line/Hot) to the hot wire (live wire) of the AC power source
Ensure the voltage rating of the module (0-230V) is not exceeded
Step 5: Neutral/Reference Connection
Connect the NP (Neutral/Reference) to the neutral wire of the AC power source or a reference point
This connection is necessary for proper voltage sensing and measurement
Important Notes:
Ensure proper insulation and protection of the module and connections to avoid electrical shock and damage
Follow the manufacturer's guidelines and safety precautions when working with AC voltages
Use suitable cable and connectors for the connections to prevent signal degradation and noise interference
By following these steps and guidelines, you can properly connect the ZMPT101B AC single-phase voltage sensor transformer module and integrate it into your IoT project.

Code Examples

ZMPT101B AC Single Phase Voltage Sensor Transformer Module Documentation

Overview

The ZMPT101B AC Single Phase Voltage Sensor Transformer Module is a compact and isolated AC voltage sensor module designed for measuring single-phase AC voltage up to 250V. It provides a safe and reliable way to measure AC voltage, making it suitable for a wide range of applications, including IoT projects, industrial automation, and home automation.

Technical Specifications

Input Voltage: 90-250V AC
 Output Voltage: 0-5V DC
 Accuracy: 1%
 Frequency Range: 45-65 Hz
 Isolation Voltage: 2500 VAC
 Operating Temperature: -20C to 85C

Pinout

The ZMPT101B module has a 5-pin interface:

VCC: 5V power supply
 GND: Ground
 OUT: Analog output voltage (0-5V)
 IN+: AC input voltage (positive)
 IN-: AC input voltage (negative)

Code Examples

### Example 1: Arduino AC Voltage Measurement

This example demonstrates how to use the ZMPT101B module with an Arduino board to measure AC voltage.
```c
const int voltagePin = A0; // OUT pin connected to Arduino analog input A0

void setup() {
  Serial.begin(9600);
}

void loop() {
  int sensorValue = analogRead(voltagePin);
  float voltage = sensorValue  (5.0 / 1023.0);
  Serial.print("AC Voltage: ");
  Serial.print(voltage);
  Serial.println(" V");
  delay(1000);
}
```
### Example 2: Raspberry Pi AC Voltage Measurement with Python

This example shows how to use the ZMPT101B module with a Raspberry Pi to measure AC voltage using Python.
```python
import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BCM)
voltage_pin = 17  # OUT pin connected to GPIO 17

while True:
    voltage_value = GPIO.input(voltage_pin)
    voltage = (voltage_value / 1023.0)  5.0
    print("AC Voltage: {:.2f} V".format(voltage))
    time.sleep(1)
```
### Example 3: ESP32 AC Voltage Measurement with MicroPython

This example demonstrates how to use the ZMPT101B module with an ESP32 board to measure AC voltage using MicroPython.
```python
import machine

voltage_pin = machine.ADC(32)  # OUT pin connected to ESP32 ADC channel 32

while True:
    voltage_value = voltage_pin.read()
    voltage = (voltage_value / 4095.0)  5.0
    print("AC Voltage: {:.2f} V".format(voltage))
    machine.delay(1000)
```
Note: In all examples, the OUT pin of the ZMPT101B module is connected to an analog input pin of the microcontroller board, and the VCC pin is connected to the 5V power supply. The IN+ and IN- pins are connected to the AC voltage source.