The ZMPT101B is a compact, accurate AC voltage sensor module designed for measuring alternating current (AC) voltage in applications where you need to monitor or measure the voltage from sources like power lines, electrical appliances, or other AC-powered systems. It's particularly useful in embedded systems for measuring and monitoring AC voltages with an Arduino or similar microcontroller.

Key Features of ZMPT101B

1. High Accuracy: The ZMPT101B sensor provides high accuracy for measuring AC voltage. It's ideal for applications requiring precise voltage monitoring.
2. Voltage Range: It can measure AC voltages ranging from 0V to 250V (depending on the configuration).
3. Adjustable Sensitivity: The module has a potentiometer (adjustable resistor) that allows you to fine-tune the output signal for more accurate voltage readings.
4. Compact Design: The module is small and easy to integrate into projects involving microcontrollers like Arduino, ESP32, or Raspberry Pi.
5. Isolation: The ZMPT101B is based on an isolation transformer, which provides electrical isolation between the high-voltage AC signal and the low-voltage output signal that is fed to the microcontroller. This ensures safety and protects your microcontroller from high-voltage spikes.

ZMPT101B Module Pinout

The module has 4 main pins:

1. VCC: Power supply pin
2. GND: Ground pin.
3. OUT: Analog output pin where the voltage reading is available.
4. ADJ: Potentiometer for adjusting sensitivity.

Applications of ZMPT101B AC Voltage Sensor

1.      Power Monitoring Systems: Used in home automation or industrial monitoring systems to measure and monitor the AC voltage of appliances and electrical systems.

2.      Energy Meters: Can be part of energy meters for monitoring power consumption and voltage levels.

3.      Safety Systems: Used in voltage monitoring systems to trigger alerts or cutoffs when voltage levels exceed safe thresholds.

4.      Smart Home Projects: Used in smart home energy management systems to monitor the power status of connected devices.

5.      Electrical Appliances: Helps monitor the voltage supplied to electrical appliances, ensuring they are operating within safe voltage limits.

6. Product model: ZMPT101B;

7.  Supply voltage: 5-30v;
8. Rated input current: 2mA;
9.  Rated output current: 2mA
10. Output Signal: Analog 0-5V;
11. Change ratio: 1000:1000;
12.  Linear range: 0~1000V 0~10mA;
13. Linearity: 0.2%
14. Isolation withstand voltage: 4000V;
15.  Onboard micro-precision voltage transformer;
16.  Analog output corresponding quantity can be adjusted;
17.  Good consistency for voltage and power measurement
18. Active output single-phase AC voltage sensor module;
19. Operating temperature : 40ºC ~ + 70ºC
20. Dimension:- Length: 50mm; Width: 17mm; Height: 20mm; Weight: 21 gm