Product Name: Ultrasonic Insect Repellent Product model: 109 Product specifications: American regulations, British regulations, European regulations Applicable voltage: AC90-230V or DC 5V Frequency: 12~90khz Main function: This product uses ultrasonic waves to stimulate the neurons of the pests, and the principle of causing the pests to be uneasy achieves the effect of repelling mosquitoes, mice, cockroaches, bed bugs, fleas and other pests. This product adopts frequency conversion, fixed frequency, high and low frequency four-band ultrasonic technology imported from the United States, which can be switched freely and can be aimed at a variety of pests. The low frequency band is mainly aimed at mice, so as to achieve a better effect of repelling mice, and the three-horn design is adopted to greatly increase the effective range. Tested and certified by the national authority: The mite removal effect reaches 99.22% of the avoidance rate, and it has a strong anti-mite effect (with certificate). It can be started with a mobile power supply outdoors. It is non-toxic, tasteless, environmentally friendly, and non-radiation, suitable for pregnant women and children.