General Description An effective repellent that keeps pests such as mice, cockroaches, mosquitoes, flies, spiders, and moths away from your home. With its electromagnetic ultrasonic technology, it provides a simple, chemical-free solution for keeping your living space free of these unwanted pests. Technical Specifications Coverage: Up to 200 m Operation: 24/7, all year round Repellent Type: Electromagnetic Ultrasonic Safe for children and pets Sold in a pack of 3 Compatibility and Accessories Compatible with all standard electrical outlets Installation Simply plug it into any outlet in your home and it will start working immediately. Usage works by emitting electromagnetic pulses through electrical cables embedded in walls, disrupting the nervous system of pests and driving them away from your space.