Question
What is the minimum voltage a KNX TP bus device needs for safe operation?
Answer
B — 21 V DC
Correct: Bus devices require a minimum of 21 V DC for safe operation.
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An error or unclear wording? Report this questionAll proposed choices (exam context)
- A.12 V DC
- B.21 V DC✓
- C.30 V DC
- D.24 V DC
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