Keep pest animals and rodent away from your property! Animals and rodents take shelter and live in rooms can do great harm to your family and your property. Try this Glaobule Battery Operated Ultra Sonic Rat Electronic Repellent device to keep the unwanted animals at bay! Safe Ultra Sonic Rodent Deterrent Device The humane mice deterrent device for car emits alternating continuous ultra sonic waves and flashlights to disrupt the darkness and quiet that rodents prefer. Keep rats, mice other pesky rodents from making themselves at home at your home attic, garage, RV, boat, ship, barn, truck, kitchen, shed, or basement, and so on. Where to Use The wireless connection allows you to place it almost everywhere indoor and mount it within cars and rooms without connecting to the electronic power. This device covering approximately 18 feet in radius. It is recommended to apply 2 or more units to alternate the operation cycles and overlap the coverage area if rodents are active. Specifications Power Supply: 2 * C batteries (Batteries Not Included) Dimensions: 4.76 2.6 1.6 inches Battery Life: 68 Days(operating continuously for 24 hours a day) Ultrasound Frequencies: Varying between 25 kHz - 55 kHz(A high-frequency sonic sounds waves that beyond the range of human hearing, so it is inaudible to human) Lights: Flashlights in green or red work with the ultrasounds by turns We stand by our product. Should you have any questions or concerns, feel free to contact us via your Amazon order ID and let us Help. - Pets and Human Safe: All household electronics. Repels by using specially designed dedicated sounds above the human hearing