Trifield is a brand known for its electromagnetic field (EMF) meters, which are devices used to measure electromagnetic fields from various sources, including power lines, electronic devices, and radio frequency emissions. Trifield meters generally measure three types of fields: electric, magnetic, and radio frequency fields, hence the name "trifield." These meters are used by individuals, researchers, and professionals who are concerned about exposure to EMF radiation for health reasons, environmental assessments, or safety evaluations.

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