Feature 1. Ultrasonic sound pressure, far from the hearing range of the human ear, will not cause harm to people and animals, will not interfere with other electrical appliances. 2. Extremely safe and environmental protection, tasteless, minimum energy consumption, total power <1W, equipped with advanced electrooptical technology. 3. Can effectively drive house inner pests, cockroaches, mosquitoes, fleas, flies, ants, carpenter ant and other injurious insect. 4. Suitable for livestock farms and other places to use, ensuring the fitness of livestock. 5. Made of high quality ABS material, sturdy, durable and long service life. Using method: After plugging the equipment into a wall outlet, you will see a blue indicator light and the equipment will start to operate normally. You will hear series of automatic scanning sounds from high frequency to low frequency. Toggle the slider on the left side of the product switch, dial "H" for mosquito repellent, cockroaches and other small pests, dial "L" for rodent repellent, choose according to the actual use of the product. In just a few days, the activity of the rats decreased sharply. During this period, the amount of insect activity increased due to the ultrasonic waves driving them out of the hiding place, but they would be eliminated in a short time. After three to six weeks, all mice and pests will be killed. Specification: Condition: 100% Brand New Item Type: Mosquito Repeller Material: ABS Color: As Picture Shown Plug: EU Plug Voltage: 90-250V Weight: Approx. 73g Package List: 1 x Ultrasonic Mosquito Repeller Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you 2. Please allow 1-2cm measuring deviation due to manual measurement.