GB1528349A - Communication apparatus - Google Patents
Communication apparatusInfo
- Publication number
- GB1528349A GB1528349A GB3712874A GB3712874A GB1528349A GB 1528349 A GB1528349 A GB 1528349A GB 3712874 A GB3712874 A GB 3712874A GB 3712874 A GB3712874 A GB 3712874A GB 1528349 A GB1528349 A GB 1528349A
- Authority
- GB
- United Kingdom
- Prior art keywords
- house
- unit
- transponder
- actuates
- ila
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Alarm Systems (AREA)
Abstract
1528349 Selective signalling CARES (COMMUNICATIONS) Ltd 7 Oct 1975 [23 Aug 1974] 37128/74 Heading G4H. In communication apparatus, any of a plurality of resident's units can send a primary call signal to a transponder-indicator unit which actuates indicator means to identify the source, actuates reassurance indicator means at the resident's unit and sends a secondary call signal to an appropriate guardians' unit (police, fire brigade &c.). In Fig. 2, if any manual switch EC in house A, for example, is opened, then over line 15b a relay ESR/A in the transponder-indicator unit drops out, lighting reassurance lamps RL in house A via line 15c, and in the transponder-indicator unit, lighting lamp ILA to identify the house and actuating an emergency automatic telephone machine EATM to send a signal (e.g. pre-recorded verbal message) via external telephone lines (and perhaps a telephone exchange) to the appropriate guardians' unit. Fire sensing (temperature or smoke) devices in house A, when actuated, open switches at FSR which via line 15d drops out a relay FSR/A in the transponderindicator unit, and this drops out relay ESR/A with the same results as before and gives an audible alarm S in house A and actuates a telephone device FATM to send out a 999 call and pre-recorded message. A battery B with mains float charger CH is provided. Testing switches ETSI-2 and FTS1-3 are provided for ILA, ILB and RL, S respectively. A primary call signal can also be given in response to a floor activity switch if it is allowed to time out say 24 hours since last being reset by being trodden on, or in response to a low-temperature sensor switch. The signal over the telephone lines may specify the house, but this is not necessary in view of lamps ILA, ILB.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3712874A GB1528349A (en) | 1975-10-07 | 1975-10-07 | Communication apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3712874A GB1528349A (en) | 1975-10-07 | 1975-10-07 | Communication apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1528349A true GB1528349A (en) | 1978-10-11 |
Family
ID=10393966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3712874A Expired GB1528349A (en) | 1975-10-07 | 1975-10-07 | Communication apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1528349A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2231429A (en) * | 1989-05-09 | 1990-11-14 | Target Ind Limited | Monitoring systems |
GB2328769A (en) * | 1997-08-28 | 1999-03-03 | Menvier | Control panel |
-
1975
- 1975-10-07 GB GB3712874A patent/GB1528349A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2231429A (en) * | 1989-05-09 | 1990-11-14 | Target Ind Limited | Monitoring systems |
GB2328769A (en) * | 1997-08-28 | 1999-03-03 | Menvier | Control panel |
GB2328769B (en) * | 1997-08-28 | 2001-05-16 | Menvier | Electrical apparatus |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |