ซีรีส์
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รุ่น 685204
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EinPAS
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31 Communication/information/entertainment
› 31.15 Telephony
31.15 Telephony
31.15.1 Basic information
8
31.15.11 Control unit/relay/contact plate
5
31.15.14 Transmitter/receiver
3
31.15.16 Speaker
1
31.15.20 Microphone
1