The ZMPT101B AC Voltage Sensor Module measures single-phase AC mains voltage safely. It uses the ZMPT101B precision voltage transformer for isolation and an op-amp circuit that gives an analog signal your Arduino or ESP32 can read. It is the standard module for energy meters and voltage monitoring projects.
| Transformer | ZMPT101B |
|---|---|
| Measuring range | up to 250V AC, single phase |
| Output | Analog (AC waveform around mid-supply) |
| Supply voltage | 5V (3.3V on many boards) |
| Adjustment | Onboard trimpot for gain |
| Isolation | Transformer isolated |
What is the operating voltage?
5V (3.3V on many boards).
Is it safe?
The module is isolated, but its input connects to 230V mains – wire it carefully and never touch the input side when powered.
Can it measure current?
No, it measures voltage. Use ACS712 or SCT-013 for current.
Can I buy the AC Voltage Sensor Module ZMPT101B in Kanpur?
Yes – buy online with delivery across India, or pick it up from the iTechBuilders store, Damodar Nagar, Kanpur.
