1、[Ultrasonic Repelling] Using variable frequency output technology, the combination of pulsating ultrasonic waves and strobe lights can reduce the hearing resistance of rodents, and the effect is remarkable. 2、[Efficient] Rodents such as mice are so afraid of ultrasonic waves in the dark that white flashing lights in cars will have a more immediate effect on them than mousetraps and drug use. 3、[Car Battery Powered] Powered by 12V conventional car battery, no need to use other power sources, with reverse connection protection function, prevent damage to the product due to reverse circuit connection. 4、[Multipurpose] This mouse repeller is not only suitable for cars, RVs, trucks, but also for garages, warehouses, attics, barns, sheds, basements, farms, etc, the 12V battery is universal. 5、[Easy To Use] Easy to install and use, install the mouse repellent in the car engine, connect to 12V voltage, turn on the switch to use, support the repelling range within 40㎡.