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EF-401, 1-Axis AC Magnetic Field Meter

Compact, Handheld Solution for AC Magnetic Field Measurement

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An affordable and reliable choice for everyday EMF diagnostics.

The EF-401 is a cost-effective, handheld AC magnetic field meter designed for quick assessments of electromagnetic radiation from common sources like power lines, wiring systems, motors, and electronic devices.

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What is EF-401, 1-Axis AC Magnetic Field Meter?

The EF-401 Magnetic Field Meter delivers simple, accurate, and fast readings of AC magnetic fields across a single axis. Ideal for electrical professionals, safety inspectors, and maintenance personnel, this tool helps you pinpoint and evaluate electromagnetic field (EMF) radiation in residential, commercial, and industrial environments. No external probe required – simply hold or place the device in the field area to measure.

Benefits

How It Works

1

Power on the meter.

2

Hold the device in the area where electromagnetic radiation is suspected.

3

Read real-time EMF values directly on the display.

4

No need for external probes – the built-in sensor does it all.

5

Use for spot checks or continuous monitoring as needed.

Key Features

1

Single-axis AC magnetic field detection

2

Handheld & lightweight design for portability

3

No external probe required – ready to use out of the box

4

Measures electromagnetic field (EMF) radiation

5

Provides quick, real-time field readings

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Ideal for basic field testing and troubleshooting

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Suitable for industrial, commercial, and residential applications

Applications

Axial Field Evaluation

Measures AC magnetic field intensity in the axial orientation.

Shielding Attenuation

Tests attenuation ratios of magnetic shielding materials and enclosures.

Emission Measurement

Detects magnetic emissions from power lines, motors, and electronic equipment.

Field & EMC Audits

Used in field audits, laboratory assessments, and EMC compliance evaluations.

Oscilloscope/DVM Interface

Connects directly to oscilloscopes and digital voltmeters for waveform and amplitude tracking.

Instrument Integration

Connects with oscilloscopes and voltmeters for detailed waveform analysis.

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