Most standard UHF card requires you to hold the card at edge. This is to maximized antenna area to achieve maximum reading distance. If your fingers covered a small portion of the card surface, the reading range will drop a lot. Many users does not realize this correct way of holding UHF card and they are not able to enjoy the fullest reading range offered by UHF readers.
Note: Please take note that the printed card number may not in sequence.
CDUS133L solves this problem with our advance anti-interference technology. The antenna coil is designed to compensate small inductance change and maintain reading range when our fingers covering the small surface on the card.
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