AI Smart Pulse Resonance Rodent Repeller, High Power Ultrasonic Pest Repeller, High Frequency Resonant Wave, 360° Full Coverage, Wave Scanning, Auto Frequency Adjustment, Physical Rodent Repelling, Safe And Reliable. This Product Has Silent And Sound Modes. The Sound Mode (Emits An Irritating Sound) Is Suitable For Use When People Are Not Around To Drive Away Pests In Advance. The Mode Can Be Switched According To The Usage Environment. Applicable For Home, Kitchen, Office, Hotel, Warehouse And Other Indoor Pest Elimination, Mosquito And Rodent Repelling.