Description: 【Ultrasound】: Under Hood Animal Repeller emits a combination of fluctuating powerful ultrasound waves, and 8 LED strobe lights to deter pesky animals entering your vehicle. 【Energy Saving】: Car Ultrasonic Mouse Repeller have auto standby mode that off battery power when the car is started, automatically resumes working after the car is turned off. 【Low Voltage Protection】:Car Engines Mouse Repeller automatically stops working to protect the vehicle Battery when Battery voltage drops too low10 months without driving has no impact. 【Multifunction】: There are two power connection methodsin car mode: 12-24V connected to the positive and negative poles of the car battery;Indoor mode:using USB cable or battery power to charge.Car Rat Repeller designed for vehicles but can be utilized almost everywhere such as vehicle, garage, attic, basement, barn, shed, warehouse, etc. 【Easy To Mount】:Vehicle Rat Repeller easy to place on flat surface or mount within any vehicles. Specification: Ultrasonic frequency: 9-65kHz Working voltage: 5V/12-24V Usage area: 50 80 square meters Batteries with battery options: 3xAA800MAH rechargeable battery Size Chart: 12cmx7.9cmx3.3cm/4.72inchx3.11inchx1.30inch Package Includes: 1 Car Rat Repeller 1 USB Cable 1 4 Cable Tie 1 Service Card Note: Please allow slightly errors due to manual measurement and different monitors.