Outdoor station for audio door phones
BM3
SIEMENS Building Technologies
BM3 is used as an analog extension for the PABX internal telephone system. It includes a built-in code lock with four codes, as well as CCTV control, a tamper switch, and a hotline button. All telephone sets that are connected to BM3 must be able to generate a standard tone signal (DTMF).
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