Protects against damage and inconvenience caused by rodents on your motor vehicle the device works even at a great distance the rodent is deterred by the high frequency sound the mini rodent deterrent high power has a specially developed piezo loudspeaker with a nawi membrane which generates an enormous sound pressure a 5 mm led additionally indicates the function of the device the unit operates in a 12 second clock on off made in germany features easy construction 12v water and s