Audible warning device - «REVUN», (so-called «air horn», «personal siren») – designed to produce sharp sound signals during the operation and use of machinery and equipment, small vessels, boats and rafts, in conditions of poor visibility and fog, during rescue operations, hiking trips, and also to scare away wild animals.  Can be used at sports competitions and various events. Audible warning device «Revun» - it is a sharp and piercing sound siren! Very easy to use: to give a signal, hold the can strictly vertically («horn» at the top) and sharply press the red button at the top of the siren to emit a sharp and roaring signal with a sound pressure of up to 130dB and a range of up to 1500m! Recommended for: employees of enterprises working in habitats of wild animals (wolves, dogs, bears, etc.), tourists, rescuers, emergency workers, sporting events, coaches and yachtsmen, motorists, bikers, amateurs sports, etc.