| (19) |
 |
|
(11) |
EP 0 901 113 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
29.12.1999 Bulletin 1999/52 |
| (43) |
Date of publication A2: |
|
10.03.1999 Bulletin 1999/10 |
| (22) |
Date of filing: 17.08.1998 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
Designated Extension States: |
|
AL LT LV MK RO SI |
| (30) |
Priority: |
03.09.1997 GB 9718547
|
| (71) |
Applicant: Amlani, Manhar |
|
Newport,
Gwent, NP9 5AG (GB) |
|
| (72) |
Inventor: |
|
- Amlani, Manhar
Newport,
Gwent, NP9 5AG (GB)
|
| (74) |
Representative: Evans, Huw David Duncan |
|
Urquhart-Dykes & Lord,
Three Trinity Court,
21-27 Newport Road
Cardiff CF2 1AA
Cardiff CF2 1AA (GB) |
|
| |
|
(57) A fire alarm system comprising a plurality of remote alarm transducers 11, each incorporating
a smoke and/or heat sensor 20 and a sounder 22. The sounders 22 emit a high frequency
sound that deters insects from entering the transducers 11 and from causing false
alarms or faults. In a preferred embodiment, the sounders 22 are also arranged to
emit an alarm signal in the event that smoke or heat is detected.