Working principle: This ultrasonic insect repellent is equipped with an intelligent microelectronic chip, a specially designed wave ultrasonic wave (12-24KHz) and an LED flash. Effectively stimulate and destroy the brain and auditory system of rats and other pests in the control area, making them feel scared and uneasy. Then quickly run away from the scene. 3 in 1 power supply method: Compatible with DC cable, USB cable and 4 AA batteries (not included). You can connect two wires to the car circuit. The car will automatically turn off when it starts to save electricity, and automatically resume work after stopping. Although this rodent repellent is designed for vehicles, it can also be used almost anywhere, such as warehouses. High quality mouse repellent: ABS material, high temperature and fire resistance, will not affect other auto parts or engines. You can add insect repellent powder (not included) to the mouth of the powder to increase the effect of insect repellent and rodent
