Cellular Radiation Blockers can be used on smartphones, tablets, notebooks, Wi-Fi modems, monitors up to 21 inches. They are for personal use and not for the environment.
For environments with TVs, for example, the most recommended are Shungite sticks and fabrics for Faraday screens (copper or silver).
- Shungite Sticks: https://www.terapiadamulher.com.br/products/bastao-de-shungite-natural
- Copper fabric: https://www.terapiadamulher.com.br/products/tela-de-cobre-antirradiacao-eletromagnetica
- Silver fabric: https://www.terapiadamulher.com.br/products/tecido-faraday-de-protecao-emf
- Copper Adhesive Tape - 1001 Utilities 😍 against EMF Radiation: https://www.terapiadamulher.com.br/products/fita-adesiva-de-cobre-protetor-eletromagnetico
The seals can even be attached to car dashboards, where they are not exposed to the sun.
They also cannot be fixed obstructing the ventilation of the devices. Valid for 3 years, as long as they are not exposed to the sun, immersed in liquid or damaged.
Regarding the number of stamps per device, think that 1 stamp is for 1 smartphone. Hence, replicate by equivalence.
Again, 1 stamp is for 1 smartphone. So, larger equipment or equipment that emits more EMF radiation deserves more attention.
The color is just a finish.