Household Electronic Mosquito Repellent Mosquito Repellent is a new type of high-tech electronic product. It uses a frequency-sweeping high-frequency ultrasonic circuit to generate 22-55KHZ frequency-sweeping ultrasonic waves. Within the range of sound waves, their endocrine system and physiological functions will be disturbed, thus having the effect of driving and killing. Ultrasonic waves are safe for humans and other animals, because sound waves exceeding 20KHZ are inaudible to humans. Because of its safety, tasteless and non-toxic, it has been widely used. This product is widely used in homes, warehouses, shops, hotels, hospitals, offices, computer rooms, gardens, hotel grain depots, etc. The effective range of the product: about 80 square meters, the effect is 60 square meters, and one is installed in each room. Power supply voltage: 110~220V Power consumption: less than 2.5W Frequency range: 22~55KHZ