The ZMPT101B is a single-phase  Alternating Current (AC) voltage sensor module. This module includes an on-board voltage transformer which performs the function of galvanic isolation, supports up to 250 Vac input voltages and delivers through its output terminal an analog sine wave with adjustable amplitude by using the on-board potentiometer. This module could be used together with a current transformer to measure power consumption.

Specifications:

• Input signal voltage: up to 250VAC
• Supply Voltage: 3.3-5V
• Output signal: 0-5V
• Size: 50 x 20mm

Datasheet of transformer

Board Schematic