Steren SEG-150, Instruction Manual

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7
PRECAUTIONS
1) Interference prevention
Numerical Access Control Card / RFID operates at 125kHz frequency. These
precautions are needed at installation:
a) Make sure the installation site is not affected by low frequency
electromagnetic waves, especially in the 100-200kHz range.
b) If there’s more than one Access Control operating in the same frequency,
make sure they are separated by at least 60cm. to avoid interference.
2) Short circuit prevention
Avoid touching live parts of the circuit during installation. To get around this:
a) Do not apply power to the device during installation.
b) Check that all cables are properly connected before applying power to
the circuit.