JPS5413297A - Fire alarm unit - Google Patents

Fire alarm unit

Info

Publication number
JPS5413297A
JPS5413297A JP7886177A JP7886177A JPS5413297A JP S5413297 A JPS5413297 A JP S5413297A JP 7886177 A JP7886177 A JP 7886177A JP 7886177 A JP7886177 A JP 7886177A JP S5413297 A JPS5413297 A JP S5413297A
Authority
JP
Japan
Prior art keywords
alarm unit
fire alarm
emergency
telephones
slave
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP7886177A
Other languages
Japanese (ja)
Inventor
Tadao Hayakawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP7886177A priority Critical patent/JPS5413297A/en
Publication of JPS5413297A publication Critical patent/JPS5413297A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fire-Detection Mechanisms (AREA)
  • Alarm Systems (AREA)

Abstract

PURPOSE: To commonly use the line and to smoothly perform communication at a fire taken place with a simple constitution, by giving call tone to slave telephone sets for emergency other than selected circuits and by connecting slave telephones, master telephones and power supply lines for emergency.
COPYRIGHT: (C)1979,JPO&Japio
JP7886177A 1977-06-30 1977-06-30 Fire alarm unit Pending JPS5413297A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7886177A JPS5413297A (en) 1977-06-30 1977-06-30 Fire alarm unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7886177A JPS5413297A (en) 1977-06-30 1977-06-30 Fire alarm unit

Publications (1)

Publication Number Publication Date
JPS5413297A true JPS5413297A (en) 1979-01-31

Family

ID=13673600

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7886177A Pending JPS5413297A (en) 1977-06-30 1977-06-30 Fire alarm unit

Country Status (1)

Country Link
JP (1) JPS5413297A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS445529Y1 (en) * 1965-09-24 1969-02-28

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS445529Y1 (en) * 1965-09-24 1969-02-28

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