This model uses powerful Ultrasonic frequencies to repel Pests like Rat,mice, Squirrels and other house hold pest. It also scares away Animals and birds as per setting in the unit . Open Area covered is around 1500 sqft . It can also operates at 12V DC/150AH for use in open field applications. For more operating instructions and its optimum use please see manual. Field applications have found it very effective on Rodents and other house hold pest. Pest starts retreating and leave that place after continuous us of this unit. Ultrasonic Pest Repellers found vast applications in areas like: Food storage, Restaurants, Kitchens, Medicine stores, Pharma companies, Textiles stores, Railway catering services, Electrical control Panels and wiring, Server Rooms, IT and Electronic hardware stores, Space applications and launching stations, and many other applications where Rodents causes irreparable loss.