<b>Keeps Unwanted Animals Away From Your Car</b><br> Rats, mice, squirrels, martens, chipmunks and other destructive rodents often shelter under the hood of vehicles and damage wiring harnesses, cables and other expensive parts. Loraffe Battery Operated Under Hood Animal Repeller emits ultrasonic waves to cause their intense auditory stress and flashing lights to target their eyesight, creating a hostile environment under the bonnet for animals or pests to live, and force them to move on and escape from your car. <br><br> <b>How It Works</b><br> Loraffe Ultrasonic Rodent Repellent works in cycles. During each cycle, ultrasonic waves and LED Flashlights will be emitted alternatively or simultaneously. The sound frequency will constantly change so that animals and pests don't get used to the same sound being produced. The ultrasonic frequencies are higher than the upper audible limit of human hearing and are silent to human ear. <b>It is recommended to apply 2 or more Ultrasonic Rodent Repellents under the hood to alternate the operation cycles and overlap the coverage area if rodent infestation is severe. </b><br><br> <b>It Is Safe To Your Automobile</b><br> This wireless ultrasonic rodent repellent operates on 3 "AA" alkaline batteries. It does not connect to the vehicle's electrical system or affect the functionalities of any parts in your vehicle.<br> <br> <b>Energy Saving</b><br> Auto standby to save battery power while driving; Automatically resume work 20 seconds after vibration stops<br><br> <b>Low Power Alarm</b><br> The repellent will beep twice every 5 seconds to remind you that the batteries should be replaced when battery voltage drops below 3.3 volts <br><br> <b>Technical Specifications</b><br> Power Supply: 3* AAA alkaline batteries<br> Ultrasonic Frequency: Varying between 25 KHz - 55 KHz<br><br> <b>Package Includes</b><br> 1* Battery Operated Under Hood Animal Repeller (Batteries Not Included)<br> 1* User's Manual<br> 1* screwdriver<br> 8* Zip Ties