IDTECK SRK101V, Руководство пользователя

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Installation and external connection
2 Precautions on installation
2.1 If installing on a metal wall
If you install the reader on a metal wall, the read range may be reduced.
To avoid this problem, it is recommended to insert the spacer between the metal wall and
the reader as shown below.
2.2 If installing more than one reader side by side or front and back
If you install more than one reader side by side or front and back, the read range may be
reduced. In this case, if you present a card to one reader, the other reader may recognize
the same card, meaning both readers read the same card simultaneously.
To avoid this problem, keep at least 20 cm of space between the two readers.