Upgraded version of ultrasonic insect repellent: Ultrasonic insect repellent socket, 45mm diameter speaker. 18 sound frequencies 360 degrees in all directions, intelligent frequency conversion to stimulate the sensory system mosquitoes, effectively repel insects, ants, mosquitoes, flies, cockroaches, mice, bats and other pests.Safety: The ultrasonic mosquito repellent is specially designed for pregnant families and infants, non-toxic and harmless. The frequency of 3D surround sound waves emitted by the insect repellent, the frequency of ultrasound is 20 kHz to 55 kHz, only affects rodents and pests and does not emit electromagnetic waves It is absolutely safe for pregnant women, babies, family members and pets.High quality, energy saving: The ultrasonic rodenticide is made of high quality ABS flame retardant materials, which has high strength, high temperature resistance, anti-aging, durable, safe and reliable to use. Ultrasonic mosquito repellent without batteries. It consumes only 0.12 kWh per day, which is energy-saving and environmentally friendly. It is an ideal electronic mosquito repellent.Wide Coverage Area: The ultrasonic range of our mice and rats can reach 120 square meters, but the ultrasonic cannot penetrate walls. In order to achieve the desired effect, it is recommended to place our insect repellent in each room. The high power ultrasonic insect repellent is an ideal insect repellent for homes, warehouses, offices, gardens, hotels and caves.Small size, easy to use: Small and mini, easy to carry and use. No tools are needed, just insert the wall vertically, and the height of the wall from the ground is 20-150 cm. Click the button to turn it on and double click on the blue light. Note: Keep it for 24 hours before turning it on.