These keyfobs are available with the most common RFID chip models in 125KHz, 13.56MHz and UHF on request.Available chips can be EM4100,EM4102,TK4100,TK28,EM4200,EM4305，or Classic S50 1K, Classic S70 4K 4K byte, Ultralight 512bit DESFire 2K/4K/8K byte etc.Logo or ID numbering can be printed on both sides.
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