1. Safe and Effective Control: This mouse repellent uses ultrasonic vibrations to effectively repel rodents without harming them. The frequency range is safe for both humans and pets. 2. Prevent Vehicle Damage: This mouse repeller helps prevent damage caused by destructive rodents such as mice, voles, squirrels, and chipmunks, protecting your vehicle's engine, wiring, and interior from costly repairs. 3. Easy to Use: This repeller is simple to operate. Simply turn it on, and it enters self-check mode before switching to working mode, automatically emitting high-frequency sound waves to deter rodents. 4. Wide Application Range: This electronic rodent repellent is suitable for various vehicle types and sizes. It can also be used in homes, garages, warehouses, and other areas where rodents may be present. Working Principle: Ultrasound Wave Rated power: 0.48W Working frequency: 12KHz-25KHz Working current: 5-40mA Ultrasonic cycle time: 30-40s Product application: Car Function: Rodent repellent, marten repellent Installation method: Open the car hood and securely place the device in a suitable location within the engine compartment. Connect the red wire to the positive terminal and the black wire to the negative terminal of the car battery using a fuse. When the switch is turned on, the device enters self-test mode and then begins operation. Professional installation is strongly recommended. Please verify the product specifications to ensure this item meets your needs. Tips: Product design may vary slightly between batches. Minor differences in appearance or color may occur and do not affect functionality. Color: Black Material: ABS Package Contents: 1 x Ultrasonic Animal Repeller Note: Light reflection and display settings may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1-3 cm.