Magnetic tiles and similar magnetic toys generally do not emit electromagnetic radiation or pose any significant health risks in terms of radiation. The magnetic fields produced by these toys are typically low in intensity and localized to the immediate vicinity of the magnets.
The fluctuations you observed on your EMF (electromagnetic field) meter may be due to the strong magnetic fields generated by the magnets in the tiles. Magnets can create magnetic fields that can be detected by sensitive instruments like an EMF meter, which is designed to measure magnetic fields.
It's important to note that the electromagnetic radiation commonly associated with health concerns, such as ionizing radiation from sources like X-rays or radioactive materials, is not emitted by magnetic tiles or other magnetic toys. These toys primarily generate static magnetic fields, which are different from electromagnetic radiation.
However, if you have specific concerns about the magnetic tiles or any other toys, it's always a good idea to consult the manufacturer or review any safety information provided with the product. Additionally, following age recommendations and supervision guidelines for toys is important to ensure the safety of children during playtime.