Product effective range: 80-120 square metersSize90*56*50mm2 Main technical parameters:1. Model: New ultrasonic mosquito and mouse repellent2. Operating voltage: AC 180V-250V/50HZAC 90-110V/60HZ3. Power: 5W4. Output frequency: 20kHz -55kHz5. Effective coverage range: 80-120m2 (open land)3 Precautions:1. This machine should be installed at a distance of 20-80 centimeters from the ground, and it is required to be inserted into a power socket perpendicular to the ground;2. The installation point should avoid sound-absorbing materials such as carpets and curtains as much as possible to prevent the reduction of sound pressure from reducing the sound range and affecting the insect repellent effect;3. If there is a significant increase in activities such as mice and pests during the first few days of use, it is a normal phenomenon. Because the mice and insects that usually hide in their nests are attacked by ultrasound and electromagnetic waves, and they flee their original hiding places one after another;4. This device is directly plugged into an AC mains socket for use (voltage range: AC90V~250V, frequency: 50Hz~60Hz);5. Attention: moisture-proof and waterproof;6. Do not use strong solvents, water, or a damp cloth to clean the body. Please use a dry and soft cloth dipped in some neutral detergent to clean the body;7. Do not drop this machine or subject it to strong impact;8. Operating environment temperature: 0-40 degrees Celsius;9. If placed in a warehouse or storage area, or on a floor with multiple rooms, multiple machines should be placed to increase effectiveness.4 Application occasions of this product:1. Flour processing factories, food processing factories, rice factories, pharmaceutical factories, feed factories, granaries, etc. that cannot use toxic bait or insecticides;2. Theaters, restaurants, supermarkets, department stores, hotels and hospitals plagued by rodent and insect pollution;3. Grocery stores, clothing stores, food stores, furniture stores, etc. that are often bitten by rats and insects;4. Villas, homes, air-conditioned living rooms, government cafeterias, and storage rooms.