Product Name: Ultrasonic Insect Repellent Product model: B109 Product specifications: American regulations, British regulations, European regulations Applicable voltage: AC90-250V Frequency: 22~65khz 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 uses chips imported from the United States, equipped with a display screen, which can detect and monitor frequency changes at any time, and is equipped with a three-stage night light function, which can freely switch the brightness according to needs. And the night light uses orange light, which can better repel mosquitoes [Scientific research shows that mosquitoes do not like/fear orange light . With automatic frequency conversion ultrasonic, it can target multiple pests at the same time without human control. Non-toxic, tasteless, environmentally friendly and non-radiation, suitable for pregnant women and children。