[ADVANCED ELECTROMAGNETIC ULTRASONICThe electronic repellent only emits ultrasound against mice, rats and other pests. Odorless and inaudible, it is extremely unpleasant for rats and mice.GET RID OF PESTSOur ultrasonic device is very effective thanks to its new technology. It emits ultrasound of different frequencies to prevent mice, spiders, mosquitoes and insects from adapting to it and force them to move away. This type of ultrasonic repellent ultrasonicis invisible and safe for humans and pets. It does not contain harmful chemicals or radiation, no electromagnetic radiation, no noise pollution, safety and environmental protection, and has babies and pregnant women. Available, 100% safeEASY TO USEUltrasonic rodent simple to use just plug it into an outlet and adjust the level, it is very easy to use. This ultrasonic device must be installed 80-120 centimeters from the ground. And vertical to the ground and plug into the power outlet.