1. This product uses the principle of ultrasonic wave to interfere mice, and can make frequency conversion ultrasonic wave to drive them away from your house. 2. This product is compact, convenient, low power consumption, etc. 3. The performance is stable and rapidly effective. 4. Can be widely used in families, restaurants, supermarkets, warehouses, kindergartens, office buildings, etc. Covers up to 500sp.F PRODUCT FEATURE Plug unit into the socket of 220V/110V AC wall outle when the button in the middle, the item will stop workin When the button in the light(Variable), the red LED pilot lamp will light up indicating that emit the variable ultrasonic waves drive the pests away. When the button in the right(Fixed), the green LED pilot lamp will light up indicating that emit the fixed ultrasonic waves repel the pests . You can turn to different button have different affect or better affect to the pests. Plug Standards: GS, UL, SA APPLICATION: Living room, Kitchen, Bedroom, Attic, Storeroom, Warehouse... OEM, ODM SUPPORT