The copier supports read/write Proximity ID (EMID, HID, AWID and Paradox) cards or key fobs. This copier only assists 125KHz frequency and does not assist other frequencies. It can copy most of the 125KHz ID cards. Does not support 13.56MHz cards and tags, and does not connect to a computer for decryption. Please confirm the frequency or type of your card before purchasing to avoid mistakenly entering incompatible products. No need to connect to a computer, just install two 1.5V AAA batteries and you're ready to use! (Note: batteries must be purchased separately) This copier can read many types of cards, including TK4100, EM4100, EM4200, TK4100-D, TK4168, HID ProxCard II, AWID, and Paradox Copiers can write multiple types of cards, including T5577, CET5200/CET5577, EN4205/4305, EL8265/8268, SIC7888. Colour:As Shown Material:plastic A: Contains: 1 ID replicator 5 keychains 5 cards B: Contains: 1 ID replicator 5 keychains Package Contents: 1 set x key fob copier Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.