The TDSi 2920-3000 Mifare 1K cards are proximity cards that are designed to provide excellent access control. These high-quality cards are integrated with Mifare technology, which ensures that they are reliable and effective. Each card has a memory capacity of 1K byte, making it suitable for a wide range of applications.Product Features:Sold in packs of 100CR80 card size (86mm x 54mm)13.56 MHz operating frequency