General description The Anti Mosquito Ultrasonic Plug is an effective pest repellent device designed to repel a variety of pests including rats, spiders, mosquitoes, mice, and cockroaches. Utilizing intelligent frequency conversion technology, it emits ultrasonic waves that stimulate the hearing and nervous systems of these pests, keeping them away from your home. Technical specifications Ultrasonic frequency: 20~55 KHZ Effective coverage area: 80-120 square meters Installation height: 10-30 inches from the ground Installation Plug the device into an electrical outlet. Install 10-30 inches above the ground. Ensure there are no obstacles within 1 meter of the device. Usage Ideal for use in homes, warehouses, offices, supermarkets, and hotels. For areas with severe pest problems, it is recommended to install 2 or more devices. Devices are not effective in other rooms if installed in one room. Other information Includes 4 packs of Ultrasonic Pest Repellers. No need for batteries,