The RFID reader also known as the transceiver sends a signal or radio wave to the RFID tag or label, the tag then wakeup and transmits back the ID of the RFID tag or label.
RFID readers, tags, and labels are designed with specific frequencies, which are usually, but not always designed for specific uses and applications. LF or Low Frequency which is usually 125.0 KHz and 134.2 KHz for most popular applications and actual goes up to 150 KHz on the scale of frequencies. LF 125.0 KHz is mostly used for industrial applications, where 134.2 KHz is used for animal identification.
Low Frequency RFID: LF (125.0 KHz and 134.2 KHz)
LF 125.0 KHz is used most often in industrial applications, such as asset management. Typical LF RFID tags are disc transponders made with PVC or epoxy casing. Low frequency RFID tags come in many other forms including glass transponders.
|LF Disc Tag|
High Frequency RFID: HF (13.56 MHz)
Ultra High Frequency RFID: UHF (860 – 960 MHz)