key Fobs/Keychain Smart Tag: 1) Chip frequency: 125kHz -13.56kHz 2) Material: ... Shape: keychain, fob, token, wris key Fobs/Keychain Smart Tag:4) Chip: TK4100, EM4100, T5557, Hitag2, Mifare S50 5 ... access control8) Looks like articleEM Tag CardFeatures:1) Card type: read only 2) Memory: 64 bit, 128 bit: Protocol ask, Manchester 3) ... , access control, industrialtransponder key Fobs/Keychain Smart Tag