Suitable frequency and type: Rfid reader writer only supports id125kz frequency, does not support other frequencies, rfid reader writer can copy id cards, hid cards and awid cards, rfid reader writer supports writing to t5577, em4305, cet5200, please confirm the frequency and type of the card you want to copy before purchasing. | Easy to carry and use: Rfid reader small size and light weight (56g), convenient for on-site copying and portable storage | Wide range of uses: Rfid copier can be used to copy parking cards, access cards, switch cards, etc. | Reusable: Rfid duplicator needs to be installed with 2 aaa batteries (not included), rfid duplicator can be used about 20,000 times under normal circumstances. | Rfid reader writer set contains :1 rfid reader writer+5 key fob,+5 cards +instruction manual (please read the instruction manual carefully when using)