Reduce electromagnetic interference (EMI) and protect your NFC/RFID devices with these ferrite shielding sheets. Each sheet measures 200mm x 300mm (about 7.9\ x 11.8\) and is 0.5mm thick, with a magnetic permeability (μ) of 50 at 3 MHz. They work across a wide frequency range from 10 MHz to 6 GHz, making them suitable for shielding RFID tags, NFC cards, electronic components, and other sensitive gadgets. The sheets can handle temperatures from -25°C to 120°C and have a surface impedance of 1x10^6 Ω/□. You can cut or layer them to fit your specific application. This 2-pack gives you plenty of material to experiment with. Simply apply them as stickers or inserts near antennas or circuits to block unwanted signals and improve performance. A handy tool for engineers, hobbyists, or anyone dealing with electronic interference issues.