UHF RFID Reader typically consists of an antenna, a transceiver, and a decoder. The antenna is used to send and receive radio waves to and from the RFID tags. The transceiver converts the radio signals received by the antenna into digital signals that can be processed by the decoder. The decoder then processes the data and sends it to a computer or other processing device for further analysis. UHF RFID Reader is typically used in applications where long-range reading is required.