PetSafe Instant Fence
Covers up to 1/2 acre. Wireless - sets up in minutes, just plug and play. Portable - can easily be used while traveling or taken to a new home if you move. Safe and Secure - provides a safety zone that you pet won't run through, dig under, or jump over. No installation; no burying wire; no stakes. This system will support an unlimited number of collars (1 is included). Easy-to-follow operation manual and video. Instant installation - if you can plug in a cord, you can set up the Instant Fence. Collar is waterproof and includes a safety battery back-up and 5 levels of stimulation to assure the right correction level for your dog. You may also choose a "beep-only" mode.
How it works: Simply plug in the transmitter somewhere inconspicuously in your home. It emits a radio signal around your home. Your pet wears a lightweight receiver collar which listens for the signal. While its receiving the signal, your dog is free to run and play. When it approaches the boundary of the signal area, it receives a warning beep. If it continues, it receives a light static energy pulse which is startling but not harmful. With a little training that is simple and quick, your pet quickly learns its boundaries. Setting the boundaries of your yard takes only a few minutes by adjusting the range on the transmitter, from a radius of just a few feet to up to 90 feet. Since the signal can transmit reliably through walls or other household obstructions, it can be placed in any convenient and discreet location in your house, typically a garage or closet.