A proximity card reader typically operates at which frequency?

A proximity card reader typically operates

Multiple choice — select the best answer

A2.4 GHz
B125 kHz
C900 MHz
D13.56 MHz

✓ Correct answer: B. 125 kHz Traditional proximity cards operate at 125 kHz (low frequency). This distinguishes them from high-frequency smart cards (13.56 MHz) used in more modern contactless systems.

.q-expl{display:block!important}.q-opt[data-idx="1"]{border-color:#16a34a;background:#f0fdf4}.q-opt[data-idx="1"] .oltr{background:#16a34a;color:#fff}.q-opt{cursor:default!important;pointer-events:none}

Keep practising. Use the free Low Voltage Tech PDF, watch the YouTube walkthrough, or unlock all 10 web questions with timed mock exams.

Free PDF Video walkthrough

Topic: Access Control

← Previous Next → 🎲 Random question ↩ Back to all questions

Keep practising

A proximity card reader typically operates at which frequency?

Related questions — Access Control

Free practice here. Timed mocks when you are ready.