Indoor and outdoor with aggressive ultrasound. Generates extremely loud, sinusoidal ultrasound that strongly disturbs martens and other animals, causing them to avoid the area. The sounds are inaudible to humans. The base unit is waterproof according to IP65 and can also be mounted outdoors. The connected plug power supply must be plugged into a dry location. Ideal for vehicle shelters, garages, barns, houses, warehouses, commercial halls, and many other applications.