Specifications Item type: Insect repellent; Material: ABS; Plug: US/EU/UK/Australia plug (optional) Weight: about 93 g/3.3 oz; Power supply: AC110-230V; Rated power: 5~8W; Audio: 22KHZ-85KHZ; Sound wave type: ultrasonic wave, electromagnetic wave; Speaker type: 2 buzzers; Coverage area: 150; Product features: Full-band dynamic cross-frequency conversion technology. Eliminate Pests With continued use, this ultrasonic pest repeller will significantly reduce pest activity within two weeks and eventually eliminate all pests within 3-4 weeks. Rather than killing pests, it repels them and makes them suitable for your home environment. Easy to install, just plug it into the socket, press it once and it will beep and the green light will flash twice. The system performs self-test, the green breathing light turns on, a beep sounds, and the system starts working. Long press to power off. It is recommended to install the device 30-70 inches above the ground. Worry-free use This non-toxic, radiation-free, odorless electronic pest control product is safe to use around children, pregnant women and pets, and is 100% environmentally friendly and effective. Wide effective coverage This repellent is widely used in kitchens, living rooms, bedrooms, bathrooms, warehouses and basements, with a coverage range of 0~150. Ultrasound cannot pass through walls, so per-room repellents will be more effective. 100% Satisfaction Customers who choose our insect repellent can get lifetime service If you are not satisfied or do not need our product after purchase, please feel free to contact us. Note: It is normal for there to be more pests in the first week of repellent. The pests will disappear obviously after 3-4 weeks. Package Included 1 x Insect Repellent, 1 x User Manual.