Ultrasonic repellent: Are you tired of waging war on mice with traps and poison? This alternative will only take a few minutes to install. Once plugged in, it emits waves that are only perceptible to rodents such as rats, mice, dormice, and martens. Inaudible to the human ear and pets. Elegant design for the living room, kitchen, professional places such as stores, hotels, hair salons... Very easy to install and use: upon receiving the box, you just have to plug it into an electrical outlet, no adjustment is necessary. For optimal effectiveness, install one box per room in your house. Does not work with batteries. Does not work on insects, mosquitoes, flies, ants, cockroaches, or spiders. Economical: Pest control devices are too expensive, we have the solution! Ultrasonic repellents are extremely unpleasant for rodents. The waves are generally effective within 3 weeks: first week: creates discomfort, second week: they are anxious, and the third week: they leave. High technology: the ultrasonic device randomly triggers waves between 25 and 65 Khz so that rodents do not get used to the waves. For even more safety, our devices are CE labeled by an independent organization. Safe use: the traps require your attention when children are playing or you must put them in a safe place so that your pets do not eat them. All these precautions are not necessary with our ultrasonic devices. Responsive after-sales service and serious follow-up. Product name: Multifunctional ultrasonic insect repellent Input voltage: 90-250 V Input frequency: 50-60KHz Ultrasonic: 25-65KHz Product size: 90 mm x 55 mm. Scope of application: 80-120 square meters (open) Installation height: 20-80CM Applications of this product: Flour processing plants, food processing plants, rice mills, pharmaceutical factories, feed factories, granaries, etc. that cannot use poison bait and pesticides; Cinemas, restaurants, supermarkets, department stores, hotels, hospitals, etc., plagued by rodent and insect pollution; Grocery stores, clothing stores, food stores, furniture stores, etc. that are often bitten by rats and insects; Villas, houses, air-conditioned rooms, canteens and storage rooms of government agencies, etc. Quantity: one piece Color: white