M1 Keychain Mf 13.56 Mhz Blue
These are key fobs with a chip that are used in apartment, office and building entrance doors, which allow the door to be opened when brought close to the smart lock on the door instead of using a key.
These are key fobs with a chip that are used in apartment, office and building entrance doors, which allow the door to be opened when brought close to the smart lock on the door instead of using a key.
