Features: 1. Ultrasonic Technology: Ultrasonic pest repellent sends variable frequency ultrasound waves and bionic waves that disorient and perturb pests, to force them out of your house. 2. Wide Effective Coverage: Electronic mosquito repellent is designed to transmit ultrasonic waves from 360-degree all directions. It’s widely used in homes, warehouses, offices, gardens, hotels, etc. We recommend you install one for each room because the ultrasound cannot penetrate walls and solid objects. 3. Safe for Human/Pets: Ultrasonic pest repeller adopts physical pest control method, free of radiation, smell, and noise. And emitted ultrasonic waves are only identified by insects, safe for humans and pets. An environmentally friendly alternative to dangerous sprayers. 4. Easy to Use: Just plug this pest repeller into the socket and vertical to the floor. Then the machine began to work when the blue light was on. No dead insects and rodents to clean up, no need to turn on/off each day. 5. Applicable: Suitable for mosquito, flea, mice, fly, cockroach, ant, bug, cricket, bat, spider wasps, etc. Specification: Material: ABS Color: Blue, White Plug Optional: US, EU, UK, JP Size: 90 x 55 x 30mm Product Power: 3W Rated Power: 22-65KHZ Power Supply: 90V-220V Weight: 60g Package Included: 1 x Ultrasonic Pest Repeller