New in 2022 and Effective: With the latest double chip, this pest repeller emits different frequencies of ultrasonic waves to irritate the nervous system of insects and rats, making them feel uncomfortable and gradually run away.Can effectively repel cockroaches, mice, mosquitoes, ants, spiders and other pests. Wide Effective Coverage Area: Each Electronic Ultrasonic Pest Repeller is effective for a large area up to 800-1300ft. But ultrasound does not penetrate walls. We recommend using at least 1 device per room.Pest control is widely used in homes, warehouses, offices, gardens, hotels and basements. Easy to Install and Use: Just plug the Ultrasonic Mosquito Repellent into the power outlet. Make sure to install it vertically 80-120cm off the ground. Ultrasonic pest control emits sound waveswith low frequency, which permanently repels pests, mice, mosquitoes, cockroaches, spiders, flies, fleas, ants and rodents. SAFE FOR CHILDREN AND PETS: Mosquito repellent is safe, odorless, free from chemicals or radiation. Pest Control is 100% non-toxic and the ideal alternative to chemicalsharmful and dangerous, poisons and traps. Product Specifications Material: ABS Color: White Power: 4-6W Input voltage: 90V~250V Ultrasonic Frequency: 20-65KHz Product technology: ultrasonic + sawtooth wave Package Includes: 6 * Ultrasonic Repellents Note: 1. Electronic Mosquito Repellent Stay away from carpets, curtains and other sound-absorbing materials that may affect the effect. Do not cover the device with other objects. 2. If you mentioned insects or hamsters as your pet, do not use this mouse antibody around your pets. 3. Since ultrasound cannot penetrate walls and other solid objects, a device is recommended for each room.