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Table 1 Frequency range limits in sleeping areas

From: The use of a bed with an insulating system of electromagnetic fields improves immune function, redox and inflammatory states, and decrease the rate of aging

 

No concern

Slight concern

Severe concern

Extreme concern

Electric Fields

 With grounding cable (V/m)

< 1

1–5

5–50

> 50

 Potential-free (V/m)

< 0.3

0.3–1.5

1.5–10

> 10

Magnetic Fields (nT)

< 20

20–100

100–500

> 500

High frequency (μW/m2)

< 0.1

0.1–10

10–1000

> 1000