Product description Mains voltage: 100-230 V AC, 50/60 Hz. Average power consumption: 4W. Frequency range: 20-70 kHz Sawtooth wave frequency range: 10-70 kHz. Colors: White, Black Plug specs: US plug Packing range: 2 x Ultrasonic insect repellent . The latest triple wave frequency conversion technology. Ultrasonic and electromagnetic waves can effectively repel cockroaches, rodents, mice and other parasites by affecting their nervous auditory system. This study found that it affects 99% of pests' brain waves, but causes no harm to humans and pets. And instead of chemical pesticides. 2.4 tapes can be selectedA. Mouse Repeller: Under normal circumstances, plug directly into the outlet. In the default power-on state, the icon is on, indicating the product is in the mouse repeller band. B. Mosquito repellent: In the rat repellent state, press the function button 1 time. The display frequency icon will light up to indicate the mosquito repellent band. C. Cockroach Repeller: Press the function button in the state of mosquito. 3.Widely Used and Energy-Saving: Wide Application: Ultrasonic pest repeller is ideal for homes, offices, garages, attics, basements, warehouses and greenhouses, etc It is suitable for insects, rats, mosquitoes, flies, wasps, ants, spiders, fleas, cockroaches, low energy but high efficiency Ultrasonic waves works. This means you get ultra-silent pest control and won't disturb you and your pets. square meters suitable. Since ultrasound cannot penetrate walls and solid objects, it is recommended to put one in a room.