Better Control, Better Results for Safe, Happy Dogs and their families.The Remington Safe Zone electronic in-ground Containment System allows your dog to play freely and safely and have full and free range of your yard. The system offers separate warning and correction zones that can be set from 1-1/2 feet to 9 feet to accommodate any size dog and any type of temperament. The advanced technology system will give your pet a progressive warning tone "chirp" that alerts it to the boundary. The light-weight dog-friendly collar has a waterproof receiver. The system includes an easy-to-use LCD push button transmitter for quick installation and set-up.