This popular multipurpose unit neutralizes electromagnetic fields and geopathic stress in your home or office. For EMF protection, the Total Shield produces a 7.83 Hz field (the Earth’s natural field, also called the Schumann Resonance), which blankets a 20,000-square-foot area (or more, depending on the model) and overcomes negative EMF fields. It protects you from all electrical and electronic devices, including computers, TVs, microwaves, even power lines outside your house. For geopathic stress, the unit detects and then amplifies the waves, reversing them by 180 degrees and retransmitting them. This counteracts the harmful waves, similar to how noise cancellation technology uses a low hum to cancel sounds.
You can use the Total Shield in one of three ways: EMF protection only, geopathic stress only or a combination of both. Colored lights blink at the Schumann resonance and can be used for stress relief or to help with biofeedback. Operates on AC adapter (included). The units are available in four coil strengths, with each additional coil adding 50% more intensity. Stronger units are appropriate for people who are very sensitive to EMFs; who have a large number of electronic devices in their home or office; or who live very close to power lines or stations. All units measure 9" high x 4.5" in diameter.
http://www.cutcat.com/item/Total_Shield/570I wonder how effective this is against pescadores?