Ultrasonic pest repellent for indoor use, 3 uts. repels small rodents (mice), ticks, fleas, spiders, and crawling insects. protected area: 45 m². emission frequency: 25 to 80 khz. power: 0.7 w. voltage: 220 v-50 hz. leave plugged in 24 hours a day and you will see results after 2 weeks. it is safe for dogs, cats, birds, and fish. keep out of reach of children