Efficient Solar ChargingBuilt-in high-tech solar panels, no need to recharge and extra batteries, Fully charged in just 4 hours under the sun, outdoor snake repellent can work for 5-7 days continuously.Large Working RangeUltrasonic snake repeller based on the principle of vibration wave and ultrasonic wave transmission, and strong underground penetration, works in a circular manner, about 15 meters in radius, and effective is about 650 square meters , when the animal enters the area, the infrared sensor is triggered. It is recommended to install 2-4 devices every 100 feet in areas where rodents occur frequently for best results. ultrasonic waves every 20 seconds to repel mice, Stimulates the central nervous system of mice by vibrating and emitting 400-1000Hz sound waves, It makes animals feel uncomfortable and can be rejected without harm , Can repel moles, gophers, cat, dog, snakes and other animals, Harmless to environment, human and animals. waterproof, anti-corrosion and flame retardant design, Excellent water resistance, It can be used with confidence even in bad weather like rain.Easy to useChoose a sunny location where the solar panel receives as much direct sunlight as possible, then turn on the switch and plug the solar ultrasonic mole into the ground to complete the installation, Protect gardens/lawns/yard/farm Note: The data are all manual measurement, please allow 1-3cm error, due to the light and display difference, there will be some color difference, depending on the physical object received.