Ultrasonic Marten Repellent for Vehicle Car House Protection Anti-Scaring Device Features: Strong Light Flash Mouse Repellent - Mice are afraid of glare and bright flashing light in the dark. The white LED light flashes inside the car, which has a more frightening effect for mice. This professional ultrasonic rodent repeller uses frequency conversion output technology, which emits a combination of fluctuating ultrasonic waves and strobe lights to scare away pesky animals entering your car, RV or truck, so that the hearing resistance of rodents can be greatly reduced, and the repellent effect is amazing. Once installed, it will last a lifetime. (NOTE: This rodent repeller is not suitable for vehicles with voltage above 24V.) This car rodent repeller has power-on self-test and vibration detection functions. The 12V model will turn off when it detects motion and has a safety shutdown to avoid destroying your battery. The working mode will turn on automatically after 5 minutes of the vehicle parked to keep the car free from pests like mice, squirrels and rodents etc, but will not disturb pets. Easy to install with cable ties long enough to place the device in suitable place. Rodents are really afraid of fluctuating ultrasonic waves, glare and flashing bright light of this pest repeller in the dark. The white strobe lights flashing in the car will have a more frightening effect on the mouse, chipmunk, critters, rodents etc, which is a much better solution than constantly setting up rodent traps or poisoning them. This under hood rodent repeller uses a traditional 12V car battery power supply, no need to use another power adapter, easy to install and use. Reverse polarity protection function prevents artificially connecting the reverse polarity circuit and damaging the product. Designed for vehicles but can be used almost anywhere such as garages, warehouses, attics, barns, sheds, basements, farms, etc. where a 12 or more volt battery is available. Performance Description: Main Material: ABS Color: Blck Quantity: 1 Pack Package includes: 1 Pack Car Under Hood Rodent Repellent Notes: Manual measurement, please allow slight errors on size. Color may be slightly different due to different screen display.