Through ultrasonic sounds it is possible to scare away animals and insects: e.g. rats, mice, martens, wild rabbits, mosquitoes. If mounted at the car, roe will be put to rout (decreased danger of accidents). For connection of a piezo-treble loudspeaker. The module is an ideal aid to scare away destructive animals out of your pantry, kitchen, storehouses, garden, etc. Also to be used as dog whistle. There are some birds species which will be scared away out of your fruit trees.