Technology Parameters Operating frequency: 125KHz/13.56MHz/860~915MHz Available IC chip: EM4100, EM4102, NTAG203, EM4450, TK4100, T5557, Hitag1, Hitag2, HitagS, S50 Mifare 1K, S70 Mifare 4K, Ultralight 10, DESFire EV1, I CODE SLI, Ti2048, Ti256, SR176, INSIDE2K, LRI2K, LRIS2K and UHF Alien H3, impinj Monza 4, etc.. Outer diameter: 20mm, 25mm, 30mm, 35mm, 40mm, 52mm or custom Hole diameter: 4mm Thickness: 3mm/4mm/5mm Protocol …