This electronic dog containment system creates a safe boundary for small, medium, and large dogs across up to 1.77 acres. The system includes a transmitter, rechargeable receiver collar, and 984 feet of boundary wire that works together to establish an effective signal field. When your dog approaches the designated boundary, the receiver automatically delivers correction signals in three progressive modes: beep with vibration, beep with low-level shock, or beep with high-level shock. The transmitter offers nine adjustable signal width levels ranging from 1.6 to 14.8 feet, allowing you to customize the boundary zone to your yard's specific needs and supports multiple dogs simultaneously. The receiver collar features IPX8 waterproof protection and an adjustable length up to 24 inches, making it suitable for various dog sizes and weather conditions. The USB rechargeable receiver provides 3 to 7 days of runtime per charge and recharges fully in 1.5 to 2 hours. The boundary wire is designed to be buried 1 to 2 inches underground for a discreet installation that maintains your yard's appearance while keeping your pet safely contained.