Focused EMF Pollution Protection. Three holes, Cobalt in color, and the size of a nickel. Especially useful for the intense needs of water heaters and motorized units, but also for general, focused protection.
Place on or near the source of electronic smog using the included double-sided tape. If possible align the white arrow with magnetic North. If you don't align to North you'll still receive a positive benefit.
Creates a large protective radius. Use more than one for severe problems.