BE425889A - - Google Patents

Info

Publication number
BE425889A
BE425889A BE425889DA BE425889A BE 425889 A BE425889 A BE 425889A BE 425889D A BE425889D A BE 425889DA BE 425889 A BE425889 A BE 425889A
Authority
BE
Belgium
Prior art keywords
contact
relay
control
line
switching
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE425889A publication Critical patent/BE425889A/fr

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B27/00—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations
    • G08B27/006—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations with transmission via telephone network

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
BE425889D BE425889A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
BE425889A true BE425889A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=86797

Family Applications (1)

Application Number Title Priority Date Filing Date
BE425889D BE425889A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
BE (1) BE425889A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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