Set of 4 Ultrasonic Insect Repellers, Indoor Electronic Mouse Trap, Plug-in Repellent Against Mosquitoes and Spiders, Effective Rodent Repeller

General Description The set of 4 ultrasonic insect repellers is designed to effectively repel mosquitoes, cockroaches, mice, mites, and other pests from your home. Utilizing ultrasonic automatic frequency conversion technology, these devices emit ultrasonic waves from 20 to 55 kHz, stimulating the auditory and nervous systems of pests. They are safe for humans and pets, provided they are placed out of reach of the sensitive ears of cats and dogs. Technical Specifications Ultrasonic Frequency: 20 to 55 kHz Coverage Area: Up to 80 to 120 square meters Recommended Installation: At a distance of 10 to 30 inches from the ground Obstacles: No obstacles within 1 meter Installation To install the repeller, simply plug it in. It is advisable to install one in each room, as ultrasonic waves cannot pass through walls and solid objects. Make sure to place it at the correct height and away from obstacles. Usage The repeller is working when you notice a hazy glow. There is no need to clean up dead pests, as there is no bad odor or corpses to deal with. Additionally, these devices do not require batteries, which saves money. Other Information Contents: 4 Ultrasonic Pest Repellers For any questions or dissatisfaction, customer service is available to resolve issues quickly.