Unlike humans, many animals can hear ultrasound.
We use this feature with the Dual solar animal repellent.
If an animal enters the sensor range, an ultrasonic signal with alternating frequency is emitted.
This quickly makes the four-legged visitors annoying.
The changing frequency covers the range of the highest hearing sensitivity of many animals.
Moreover, the getting used to is prevented.
The solar animal defense system Dual has a double loudspeaker system as well as an extra large solar panel for charging the in-built battery.
This text is machine translated.