<b>A humane and safe way to keep pesky animals away from your cars, garages, rooms, warehouse:</b><br><br> <b>Deter away: </b><br> Mice, squirrels, rabbits, rats, martens/sables, & even cats <br><br> <b>Where can use:</b><br> Under Hood of the car, car trunk, garage, room, warehouse (Tractor, Snowmobile, boat or other vehicle), even portable<br><br> <b>How this animal repeller to work:</b><br> The unit produces powerful sound waves and strobe light that are very irritating to small animals. Random blasts of this high frequency sound keep pests from getting comfortable insuring that they move on & leave the area. It is recommended to apply 2 or more Ultrasonic Pest Repellers under the hood to alternate the operation cycles and overlap the coverage area if rodent infestation is severe. <br><br> <b>Safe for Human and Vehicls:</b><br> ＊ Human - The ultrasonic frequencies are higher than the upper audible limit of human hearing and are silent to human ear.<br> ＊ Vehicles - This wireless ultrasonic rodent repellent support operates on 4 "AA" alkaline batteries. So It not must to connect to the vehicle's electrical system or affect the functionalities of any parts in your vehicle.<br><br> <b>Specifications</b><br> Power Supply: 4 * AA alkaline batteries(Not included) or DC<br> Ultrasonic Frequency: Changing between 18 KHz - 36 KHz<br><br> <b>Package list:</b><br> 2 * Battery Operated Under Hood Animal Repellers (Batteries Not Included)<br> 2 * Cable to vehicle power<br> 2 * DC to USB cable<br> 8 * Cable ties