Sigur MR1, Руководство пользователя

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31 Sigur MR1
It is recommended to locate the readers at a distance from one
another so that they do not read the same ID several times:
• Cards: the spacing between the readers should be at least 15cm;
• Smartphones: the spacing depends on the customizable
level of signal.
It is not recommended to install the readers on metal surfaces, near
radio signal sources and power lines as it will decrease the ID reading
range, including the reading range for smartphones.
* in UID read mode (if static UID enabled)/in secure
mode (if Mifare Classic or Plus emulation enabled)
according to AN10833 MIFARE Type Identification
developed by NXP.