General description Are you bothered by various parasites? The Ultrasonic Mosquito Repellent Plug utilizes automatic frequency conversion ultrasonic technology to emit 20~55KHZ ultrasonic waves, effectively repelling pests such as mosquitoes, cockroaches, mice, mites, and more. This device helps maintain a clean and tidy home by creating an environment that is intolerable for these pests. Technical specifications Rated Power: 3W Power Voltage: AC90~220V Supply frequency: 50 Hz Usage For optimal results, it is recommended to install one ultrasonic pest control device in each room. For larger areas, two units may be necessary. Keep doors and windows closed to ensure the ultrasonic sound effectively reaches the pests. It is normal to observe increased pest activity during the initial weeks, as the device works to repel them. Other information Ultrasonic waves do not penetrate walls. For best results, allow approximately four weeks to see full effects. Continued use is recommended to