Features: 1. Use the dual ultrasonic and electromagnetic chips work simultaneously to disorientate the hearing and nervous system of pests to quickly and powerfully drive them away. 2. The ultrasonic frequency is inaudible to humans and pets, it is animal-friendly and safe for children. 3. Work by low frequency ultrasonic wave which can repel many kinds of pests quietly and effectively. 4. Pest repellents are simple to use. All you do is plug pest repellent ultrasonic in an electrical outlet. 5. It's widely used in homes, warehouses, offices, restaurant, supermarket, hospital, granary etc. Notice: *Actual color may be slightly different from the image due to different monitor and light effect *Please allow 1-3cm deviation due to manual measurement Description: Size: 90*56*50mm Package List: 1 set x Multifunctional Pest Repeller