Ultrasonic Insect Repellent Mosquito Killer 1. Size: about 6 x 2 x 8cm 2. Material: ABS 3. Features: safe and non-radiation, all-round drive, energy-saving and silent, intelligent frequency conversion 4. Rated power: 5w 5. Rated voltage: 110220v 6. Rated frequency: 55-85Hz 7. Usable area: less than 100 square meters Precautions: 1. The machine should be installed at a distance of 20 to 80 cm from the ground, and it is required to be inserted into the power socket perpendicular to the ground 2. The installation point should be avoided as far as possible from sound-absorbing materials such as carpets and curtains to prevent the reduction of sound pressure from reducing the sound range and affecting the insect repellent effect 3. In the first few days of use, it is normal if there is a significant increase in activities such as rats and pests. Because the rats and insects that usually hide in their nests are attacked by ultrasonic and electromagnetic waves, they fled their original hiding places. 4. The machine is directly plugged into the AC mains socket for use (voltage range: AC90V～250V, frequency: 50Hz～60Hz) 5. Note: moisture-proof and waterproof 6. Do not use strong solvents, water or damp cloth to clean the body, please use a dry soft cloth dipped in some neutral detergent to clean the body 7. Do not drop the machine or subject it to strong impact 8. Use environment temperature: 0～40 degrees Celsius 9. If it is placed in a warehouse or a place where items are stacked, or on a floor with multiple rooms, several more machines should be placed to increase the effect Application occasions: 1. Flour processing plants, food processing plants, rice plants, pharmaceutical plants, feed plants, granaries, etc. that cannot use poison baits and pesticides 2. Theaters, restaurants, supermarkets, department stores, hotels, hospitals, etc. plagued by rodent pollution 3. Grocery stores, clothing stores, food stores, furniture stores, etc. that are of