Household Ultrasonic Mosquito Repellent Electronic Mouse Repellent Intelligent Variable Frequency Insect Repellent Devices Works by continuously transmitting a powerful range of ultrasonic sound waves that drives away pests. Non-toxic and harmless to humans and pets, an alternative to toxic chemicals and dangerous traps. Protects an area up to 80-120 square meters if there is an open space. Just plug in the socket, easy and convenient for use. LED light indicates that it is currently working. Low power consumption, suitable for long time operation. Does not interfere with the operation of radio, television or other electronic equipment. Safe, environmentally-friendly, effective protection to help eliminate common household pests Specifications: Voltage:220 (V) Power: 5 (W) Weight:100g Output frequency:20KHz-45KHz Shell material:ABS Size: 90 * 56 * 50 (mm) Effect range80-120 square meters Plug Style:EU US Specifications: Easy and convenient for use. Safe, environmentally-friendly Non-toxic and harmless to humans and pets Protects an area up to 80-120 square meters Low power consumption, suitable for long time operation. Powerful range of ultrasonic sound waves that drives away pests. Does not interfere with the operation of other electronic equipment. Package Included: 1 * Ultrasonic Pest RepellerUS/EU PLUG Notes: Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Please leaving a message before you give the bad feedback,if the products have some problems. Thanks for your understandings.