Upgraded version of ultrasonic insect repellent: ultrasonic mosquito control grip, 45mm diameter horn. 18-frequency sound waves are 360 degrees in all directions, intelligent frequency conversion stimulatesthe mosquito sensory system, effectively repelling insects, ants, mosquitoes, flies, cockroaches, mice, bats other pests. Safety: The ultrasonic mosquito repellent is specially designed for pregnant women babies, non-toxic harmless. The frequency of 3D surround sound waves emitted from the repeller, the ultrasonic frequency is 22-65kHz, only affects rodents pests, does not emit electromagnetic waves! Absolutely safe for pregnant women, babies, family members pets. High quality energy saving: The ultrasonic insect repellent is made of high quality ABS flame retardant material, which has high strength, high temperature resistance, anti-aging, durability, is safe reliable toutilize. Battery-free ultrasonic repeller. It consumes only 0.12 kWh of electricity per day, saving energy protecting the environment. It is an ideal electronic mosquito repellent. WIDE COVERAGE: Our ultrasounds for mice rats have a range of up to 120 square meters, but the ultrasounds cannot penetrate walls. To achieve the desired effect, it is recommended to place our insect repellent in each room. insect repellenthigh power ultrasonic is an ideal repellent for homes, warehouses, offices, gardens, hotels caves. Small size, easy to use: The size of the indoor electric pest repeller is 6 x 6 x 5.5cm, small small, easy to carry use. No tools required, just insert it vertically into the wall, the height of the wall fromfrom the ground is 20 to 150 cm. Click the button to power on, double click the Blu-ray.