Upgraded Ultrasonic Pest Repeller: Stimulate the nervous system of pests and make them extremely uncomfortable with 22kHz-65kHz wide-band ultrasonic waves. The Insect Repellent equipped with advanced frequency conversion chip, ensuring pests can't adapt to the sound and stay away from your home. 1200 ftUltra-Large Effective Area: Powerful ultrasonic wave covers up to 1200 ft, enabled by Rodent Repeller's newest 3D surround dual speakers. With unique expanded sound channel, ultrasonic waves can better spread in all directions, leaving nowhere for pests and rodents to hide. Quiet and Quick Pest Control: Emitting scientifically calibrated ultrasonic waves that are far beyond the hearing range of human and pets, only pests and rodents can hear the harsh noise. Plug and repel, enjoy a pest-free life with the Electronic Bug Repellent right away. Safe Meets Effective: Say goodbye to harmful poisons, hazardous chemicals and traps, this Indoor Pest Repellent effectively repels most pests and rodents like rats, bats, mosquitoes, roaches, ants and spiders without any chemicals, radiation or toxic odors, 100% safe for human and pets. Night light function: The special full-wavelength light of the Pest Control Device enhances the repelling effect. Plus, the soft, eye-friendly light doubles as an atmosphere light to help you relax and sleep more soundly.