PT68875A - Schaltungsanordung fur eine ruf-,tursprech- und turoffneranlage - Google Patents

Schaltungsanordung fur eine ruf-,tursprech- und turoffneranlage

Info

Publication number
PT68875A
PT68875A PT68875A PT6887578A PT68875A PT 68875 A PT68875 A PT 68875A PT 68875 A PT68875 A PT 68875A PT 6887578 A PT6887578 A PT 6887578A PT 68875 A PT68875 A PT 68875A
Authority
PT
Portugal
Prior art keywords
tursprech
turoffneranlage
schaltungsanordung
ruf
und
Prior art date
Application number
PT68875A
Other languages
English (en)
Portuguese (pt)
Original Assignee
Siedle & Soehne S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siedle & Soehne S filed Critical Siedle & Soehne S
Publication of PT68875A publication Critical patent/PT68875A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
    • H04M11/025—Door telephones

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
PT68875A 1977-12-16 1978-12-05 Schaltungsanordung fur eine ruf-,tursprech- und turoffneranlage PT68875A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2756276A DE2756276C3 (de) 1977-12-16 1977-12-16 Schaltungsanordnung für eine Ruf-, Türsprech- und Türöffneranlage

Publications (1)

Publication Number Publication Date
PT68875A true PT68875A (pt) 1979-01-01

Family

ID=6026379

Family Applications (1)

Application Number Title Priority Date Filing Date
PT68875A PT68875A (pt) 1977-12-16 1978-12-05 Schaltungsanordung fur eine ruf-,tursprech- und turoffneranlage

Country Status (14)

Country Link
BE (1) BE872780A (en:Method)
DE (1) DE2756276C3 (en:Method)
DK (1) DK535478A (en:Method)
ES (1) ES475995A1 (en:Method)
FI (1) FI783834A7 (en:Method)
FR (1) FR2412126B3 (en:Method)
GB (1) GB2010642B (en:Method)
IS (1) IS2466A7 (en:Method)
IT (1) IT1101562B (en:Method)
LU (1) LU80652A1 (en:Method)
NL (1) NL7812007A (en:Method)
NO (1) NO784143L (en:Method)
PT (1) PT68875A (en:Method)
SE (1) SE7812671L (en:Method)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1110111B (it) * 1979-01-12 1985-12-23 Acet Srl Impianto citofonico a portiere elettrico a due fili,suscettibile di utilizzare un pressistente impianto a campanello,senza necessita' di ulteriori linee di alimentazione
DE4130101C1 (en) * 1991-09-11 1993-02-04 Ritto-Werk Loh Gmbh & Co Kg, 6342 Haiger, De Door intercom with door-opening button - centrally generates call signal and feeds to individual internal intercoms using circuit including two series-connected Zener diodes and parallel decoupling diode

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES396844A1 (es) * 1970-11-10 1974-06-16 Citovox Instalacion interfonica con cerradura electrica y conexio- nes obtenidas por solamente dos cables.

Also Published As

Publication number Publication date
GB2010642A (en) 1979-06-27
IT7830842A0 (it) 1978-12-14
SE7812671L (sv) 1979-06-17
FI783834A7 (fi) 1979-06-17
BE872780A (nl) 1979-03-30
IT1101562B (it) 1985-10-07
NL7812007A (nl) 1979-06-19
DE2756276B2 (de) 1979-10-11
NO784143L (no) 1979-06-19
FR2412126A1 (en:Method) 1979-07-13
DE2756276A1 (de) 1979-06-21
GB2010642B (en) 1982-01-20
LU80652A1 (de) 1979-04-13
FR2412126B3 (en:Method) 1981-10-16
ES475995A1 (es) 1979-04-16
DE2756276C3 (de) 1982-08-12
IS2466A7 (is) 1978-11-24
DK535478A (da) 1979-06-17

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