DESCRIPTION 
ZMPT101B a voltage transform ideal to measure the AC voltage. It has high accuracy, good consistency for voltage and power measurement up to 250V AC. Easy to use and comes with a multi turn trim potentiometer for adjusting the ADC output.​ The output of this sensor is analog. if you change input voltage, the output voltage will change as well.
 
SPECIFICATIONS
Output Signal: Analog 0-5V
Operating Voltage: DC 5V-30V
Measure within 250V AC
Rated input current: 2mA
Size: 49.5 mm x 19.4 mm
Onboard micro-precision voltage transformer
Analog output corresponding quantity can be adjusted
Good consistency for voltage and power measurement
Active output single-phase AC voltage sensor module
 
Resources:
1. Interfacing ZMPT101B Voltage Sensor with Arduino
2. How to use ZMPT101B Voltage Sensor Module with Arduino
3. Easy measure of AC Voltage using Arduino and ZMPT101B
4. ZMPT101B voltage sensor datasheet