Question
What must be ensured for mains-operated KNX radio devices?
Answer
A — That the mains voltage is available at the selected mounting site
Correct: the source requires mains voltage to be present at the chosen mounting site for mains-operated RF devices.
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An error or unclear wording? Report this questionAll proposed choices (exam context)
- A.That the mains voltage is available at the selected mounting site✓
- B.That a twisted-pair bus cable reaches the device
- C.That the device is within 10 m of the receiver
- D.That the device is battery-free
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