The SPIRO® DISC is a long-range filter that uses the natural nanomagnetic properties of the SPIRO® material (contained within it) to function as a passive filter for high-frequency telecommunication waves and low-frequency waves generated by alternating current. With an action range of 23.6 feet(7 meters) radius, the filtering power within the disc is six times stronger than that of the SPIRO® CARD. It is the ideal solution to filter the pollution produced by all smart home appliances such as kitchen appliances, or a WiFi router. It has the ability to filter the low-frequency fields of alternating current, so it can protect the inhabitants of a home from the emissions of Smart Meters or an electrical panel. It is recommended that the SPIRO® DISC be placed at least two meters from the devices whose emissions are to be filtered. This filter has been found to not affect the performance of the devices it is used with; on the contrary, laboratory tests have shown that it is fully compatible with them, optimizes their operation, and lengthens their useful life.