125 Khz TK4100 RFID KEYFOB with Key Ring.
RFID Tag Keyfob used for sensing and identifying tagged people and objects for access control, automation, and a whole range of different applications. Its operating on a frequency of 13.56MHz, these tokens are all pre-programmed with unique ID numbers to communicate wirelessly with RFID Readers. It can attach to vehicles or items, keyrings to keep track of the location via an array of readers in the office, warehouse or home. Each RFID Tag comes attached to a small keyring, within a little blue housing.