ZMPT101B AC Single Phase Voltage Transformer Sensor Relay is the best for the purpose of the DIY project, where we need to measure the accurate AC voltage with the voltage transformer. This is an ideal choice to measure the AC voltage using Arduino/ESP8266/Raspberry Pi like an open source platform. In many electrical projects, engineer directly deals with measurements with few basic requirements like.
- High galvanic isolation
- Wide Range
- High accuracy
- Good Consistency
ZMPT101B voltage sensor is a high-precision voltage Transformer. This module makes it easy to monitor AC mains voltage up to 1000 volts. A tiny little thing the size of a bouillon cube. Holds up to 4kV per breakdown voltage, the ratio of turns is 1: 1, but this is a current transformer of 2mA: 2mA. We feed it a current and remove the current. The input current is simply set by the resistor in series R1, and we use a sampling resistor R2 in parallel to get the output voltage.
Features :
- low price
- Small size (49.5mm x 19.4mm) and lightweight
- Easy PCB mounting
- Good consistency
- widely acclaimed
Specifications:
- Rated input current: 2mA
- Rated output current: 2mA
- Linear range: 0~1000V 0~10mA
- Isolation withstand voltage: 4000V
- Turns Ratio: 1000:1000
- Measurement accuracy Class: 0.2
- Linearity: 0.001
- Rated Burdon: <=200Ohm
- Operating Frequency: 50-50Hz
- DC coil Resistance: 110 @ 20 deg Cel
Applications of Small Size Voltage transformer
- Metering (electrical energy meters)
- AC Voltage measurement
- Sensing Overload Current
- Ground fault detection
- Household electrical equipment
- Industrial apparatuses
- Electrical testing equipment and relay protection
Package Includes:
- 1 x ZMPT101B AC Voltage Sensor Relay

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Johnson Pavoo –
Working with out any flaw.
Lokesh Manmode –
I am happy to have this component.
VIPUL PATEL –
good