Electric Dog Fence System, Pet Containment with Shock Collar, Adjustable Range Up to 1.2 Acre, Water Resistant, for Small Medium Large Dogs - Dual Receiver

【Adjustable Control Range】: Customize the boundary area up to 1.2 acres or 5000 square feet; easily adjust the correction level to suit your dog’s temperament; wire break alarm notifies you of any system interruptions for reliable containment 【Safe & Effective Training】: Utilizes tone and static shock correction levels to gently train your dog; the intensity increases as your dog approaches the boundary, effectively encouraging them to stay within the designated area; suitable for dogs 4lbs and over 【Multiple Dog Support】: One transmitter can be paired with up to 3 receiver collars; this package includes 2 adjustable receiver collars with neck straps, fitting neck sizes from 7.5 to 17.92 inches; ideal for households with multiple pets