Different Alarm, Horn, Gong etc.

Electronics Infoline Web

Snore alarm electronic device

http://chabin.laurent.free.fr/ronfleur/ronfleur.htm

http://www.zen22142.zen.co.uk/Circuits/Alarm/radiowavealm.htm

http://www.geocities.com/ykirill/sas/sas1_1.html

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http://www.mitedu.freeserve.co.uk/Circuits/Alarm/radiowavealm.htm

http://www.mitedu.freeserve.co.uk/Circuits/Alarm/sza.htm

http://www.web-ee.com/Electronic-Projects/projects/loop_alarm/index.shtml

http://www.zen22142.zen.co.uk/Circuits/Alarm/mini-arlms.htm