warning device

1. A device that signals the occurrence of some undesirable event (synset 102697285)
   is a type of: device - an instrumentality invented for a particular purpose
   subtypes:

   • automobile horn, car horn, hooter, horn, motor horn - a device on an automobile for making a warning noise
   • burglar alarm - a warning device that is tripped off by the occurrence of a burglary
   • fire alarm, smoke alarm - an alarm that is tripped off by fire or smoke
   • horn - an alarm device that makes a loud warning sound
   • siren - an acoustic device producing a loud often wailing sound as a signal or warning
   same as: alarm, alarm system

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