What is EMF elimination system and how it works?
The EMF-reduction system used in Ereada® mats manufactured by Hyundai Medical in Korea is similar to the systems used in Korean-made Richway/Fuji Bio Biomats.
User protection from unwanted EMF is provided through both passive and active EMI (electromagnetic interference) control technologies built into our amethyst mats.
Passive EMF reduction includes:
- double silicone and Teflon insulation
- low-emission titanium heating elements
- shielding layers made with copper fiber, carbon fiber, and foil
These layers help keep residual EMF levels very low.
Active EMF reduction uses special wiring and carbon shielding that capture electrical spikes. Working together with the controller’s AUTO EMI function, the system directs excess electrical noise into the wall outlet ground connection, similar to how a lightning rod safely directs energy into the ground.
Measurements show that even during brief spikes, magnetic field levels remain around 0.2–0.5 mG — typically lower than average household background levels (0.5–4 mG) and often within commonly referenced ranges for sleep environments.
As with all electric devices, components such as outlets, connectors, switches, and controllers may show slightly higher readings near the source (sometimes up to 4–8 mG), but these levels drop quickly as you move just a few inches away.
If you are especially sensitive to EMF, it is best to keep the controller and connectors farther from your head. Use an amethyst pillow or regular pillow, or lie with your feet toward the connector instead of your head.
If you feel uncomfortable using electrical functions at all, you can preheat the mat to your desired temperature, unplug it, and then lie down. The warmed crystals retain heat and continue to release far-infrared rays naturally. This approach is also ideal for overnight use, helping reduce dehydration and “dry mouth.”
Even once the mat cools, it can still reflect and amplify the body’s own warmth and naturally emit gentle infrared rays and negative ions.