About em4550 rfid card
31 em4550 rfid card products are offered for sale by suppliers on Cooig.com, of which access control cards accounts for 16%.
A wide variety of em4550 rfid card options are available to you, such as rfid, nfc.You can also choose from pvc, plastic and epoxy em4550 rfid card,as well as from waterproof, weatherproof, and mini tag em4550 rfid card,and whether em4550 rfid card is 125khz, or 13.56mhz.