Low Frequency (LF) RFID Sensor:
Common uses LF RFID tag for animal identification, door access control, and hospital patient identification. RFID systems currently operate in Low frequency (LF): between 125 to 134 KHZ use for Short read range (< 0.5 m) and slow read speed it Work well around water and metal products. LF sensor used for access control and livestock tracking systems.
LF frequency band provides a short read range with slower read speed than the higher frequencies, but is not very sensitive for radio wave interference.