Dual-frequency Ultrasonic Mosquito Repellent Household Insect Repellent for Pregnant Women and Children, Product specifications: US Plug 1. Purpose: used to repel mice, mosquitoes, cockroaches and other pests 2. Working mode: frequency conversion ultrasonic + electromagnetic wave 3. Features: intelligent frequency conversion, physical mosquito elimination, silent design, energy saving and power saving, smart chip, powerful mosquito repellent, available for pregnant and infants 4. Material: ABS high-quality fire-retardant material 5. Weight: 31.5g 6. Rated voltage: AC 90-250V 7. Rated frequency: 22-65KHZ 8. Rated power: 3w installation method: 1. Install on the power socket on the wall about 20-80 cm from the ground, and keep the product vertical to the ground (remember that the product cannot be laid flat on the ground) 2. The ultrasonic emission port should be as far as possible towards the open place in the room (not directly towards the door or outside the window), and there should be no tall obstacles within 1 meter in front of the mouse repeller (that is, it should not be installed in refrigerators, wardrobes, sofas, curtains, etc.) , And the bottom of the bed, etc.) 3. To prevent and control rats, cockroaches and other pests, you should try to keep the home environment clean, and cut off the food sources of rats and pests (ie, collect the rat food) and use it with this machine, you will get more satisfactory results 4. The product should work uninterrupted for 24 hours to achieve the effect of repelling mice and mosquitoes Precautions: 1. Please install the product indoors, do not use it in a high temperature and humid environment, and do not put the product in water or other liquids 2. Be sure to inform children in advance that it is forbidden to touch and play when the product is powered on 3. This product should be used continuously throughout the year without interruption. After a week of use of this product, mice and mosquitoes feel painful, irritable, and difficult to give up their old homes for a while, so they run around and mo