Dog Whistle

     How does it work?

    Dogs can hear higher pitched sounds than people can. That is why dog whistles seem to be silent. Dogs hear the high frequency sounds that we cannot. High frequency sounds usually travel further than voices and can be heard further away. These high frequency sounds have the effect of immediately getting a dog's attention. 
 
    Dog whistles are typically used as part of a training routine that is designed to train your dog to do tricks or for behavior modification. A pure tone is much easier for a dog to distinguish compared to verbal commands. Different sound patterns can be used to trigger various responses. For example, two short bursts could mean "stop", and one long burst could mean "lie down".

    For general information on dog whistles, the following is a useful Wikipedia link: http://en.wikipedia.org/wiki/Dog_whistle

    Features
-3 Whistle
-Variable frequency tone generator
-2 Different waveform - sine and square wave.