1.RFID key card, ABS ,125KHz or 13.56MHz 2 ... ) Shape: keychain, fob, token, wriskey Fobs/Keychain Smart Tag:4) Chip: EM4100,5) Custom logo or photo is ... ) Application: parking, car, access control8) Looks like articleEM Tag CardFeatures:1) Card type: read only 2) Memory: 64 ... 3) Mode: EM4100, EM4102, TK4100 (much cheaper, compatible with EM) 4) Frequency: 125kHz 5) Transmission: Passive 6) Material: PVC ...