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Mobile telephone with built in ultrasonic signal generator to ward away aggressive animals
Mobile telephone with built in ultrasonic signal generator to ward away aggressive animals
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机译:带有内置超声波信号发生器的手机可抵御攻击性动物
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摘要
The mobile telephone has a built-in signal generator which outputs high level sonic or ultrasonic signals to ward away aggressive animals, dogs, etc. The generator can be activated by a button on the telephone key pad or by a separate switch. The power is preferably provided by the telephone battery and the signal generator power can preferably be controlled or regulated. The type of signal may also be programmable.
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