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What is the difference between door readers and the Long Range RFID Reader?

Low-frequency (LF) door readers and ultra-high-frequency (UHF) readers are two types of RFID (Radio-Frequency Identification) readers that operate at different frequency bands and have distinct characteristics and applications. Here’s a comparison of LF door readers and UHF readers:

  1. Frequency Range:
    • LF Readers: Typically operate in the frequency range of 125 kHz to 134 kHz.
    • UHF Readers: Operate in the ultra-high-frequency range, typically around 900 MHz to 960 MHz.
  2. Read Range:
    • LF Readers: Have a relatively short read range, typically ranging from a few centimeters to a couple of meters, depending on the type of LF RFID tag and reader.
    • UHF Readers: Offer a significantly longer read range, often exceeding several meters, and in some cases, even up to tens of meters. UHF RFID is known for its long-range capabilities.
  3. Antenna Size:
    • LF Readers: LF antennas are generally smaller and more compact, suitable for applications where space is limited.
    • UHF Readers: UHF antennas are typically larger due to the higher frequency, which allows for longer read ranges but requires more space.

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