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3.2 Tamper-proof button
When the S900 detects it is being “tampered” with, it will send an alarm
signal. This condition occurs when the S900’s tamper switch loses
physical contact with the S900’s backplate.
3.3 Using USB flash drive
The USB port can be used to upload and download data when using a
ZK Software-supplied USB flash drive (needs to be ordered separately).
3.4 Built-in proximity card reader (Optional)
When using the optional built-in card reader, flash the card 2 to 3 inches
from the card reader. The optional card reader supports both thick
(1.88mm) and thin (.8mm) cards, whose operating frequency is 125
kHz.
3.5 Built-in MIFARE card reader (Optional)
Using Mifare cards allows fingerprint templates to be stored on the
cards, instead of storing the templates on the S900.
When using the optional MIFARE card reader, flash the card 2 to 3
inches from the card reader. The MIFARE card reader supports
MIFARE cards that operate at a frequency of 13.56MHZ, and a
communication speed of 106 kbps.
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