Multi Frequency Generator description

Choose 44 different frequencies from 5 Hz to 22,000 Hz.
Ideal as :
* a mosquito repellent
* dogs or cats repellents
* just to test your hearing
* test their audio systems
* test the instruments
* etc

Attention
Please refrain from using long-term use in the MEGAvolume.
Please refrain from a hearing aid, using headphones.
Please stop using as soon as I felt the adverse effects, including headache.
This application is not a thing to guarantee an effect.