What's the Difference? 125 kHz vs. 13.56MHz RFID hotel ...
2018-5-10u2002·u2002In most hotel door lock, the antenna will be surrounded by metal,except the front and back. The metal will decay the RF signal. Bonth 125KHz and 13.56MHz RFID signal will be affected. In this environment, the higher frequency(13.56MHz)still keeps an acceptable working distance in 3-5cm, better than 125KHz (left only 1-2cm).
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