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key extension module
- Auxiliary device with multiple (programmable) keys for desk telephones, e.g. for the COMfortel family
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keylogger
- Hardware or software that logs user input at the keyboard of a computer in order to monitor or reconstruct it
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KNX/EIB
- KNX combines different building functions into a single uniform system with a field bus; it is a further development of the older global "European Installation Bus" (EIB) standard
