Giving your dog a fenced-in play area doesn't have to be expensive or complicated. The Stay & Play Wireless Fence with Replaceable Battery Collar lets you create a secure play area without spending time burying wires and without the high cost of building a physical fence. The fence transmitter is portable for RVs, cabins, and rental houses, just plug the transmitter into a standard outlet near the area where you want to contain your pet. The transmitter communicates with your pet's waterproof receiver collar and helps keep him in the designated area. Choose from 5 adjustable levels of static correction to find just the right level for your pet, plus tone only mode which warns your pet with a beep. With just a few short training sessions, you'll create a secure boundary for your pet to enjoy freedom and fun! Kit Includes: Transmitter with power adapter (Power adaptor images for reference only, actual adaptor appearance may vary), Waterproof receiver with adjustable 3/4 collar strap 6-Volt Battery (RFA-67D-11), Test light tool, Quick start guide, 50 boundary training flags, Short and long contact points, Contact point wrench, Mounting bracket and hardware