Adjustable sensitivity and frequency: You can adjust the element's sensitivity and frequency according to the environment to increase the protection area. Easy setup: just place the repeller on the area you want to protect and place it in a place with plenty of sunshine. Charging Free: This ultrasonic animal repeller is equipped with 2400mAh fully charged battery and solar panel. For the best riding effect, I suggest filling the pad once a month. We attached a special charging cable, please hold it good. Waterproof: The ultrasonic animal repeller with IP44 waterproof design allows it to operate in rainy days. Note: Do not soak in water. Long range: The infrared PIR motion sensor has an angle of up to 110 degrees and a detection range of up to 9 meters. This activates the cat repeller to produce a high-pitched sound that is irritating to the cat and is almost inaudible to humans.