IUC-4200 Express Install In-Ground Pet Fencing This system is the quickest way to keep your dog safe in the yard. We’ve taken elements of our best-selling in-ground fencing and added the collar that consumers told us they want! The sleek, ultra-thin collar offers cutting edge technology and is lighter and more comfortable than other containment solutions. We’ve also added pre-twisted wire to make your installation quicker and enhanced external lightning protection unit that keeps your system protected from lightning damage. NEW! ReadyTest™ - Ensures correct collar fit, graduated battery status, and warns of potential system problems for greatest pet safety. Contoured, Integrated Collar - 30% thinner than other collar designs, a fraction of the weight. More comfortable for the dog. Waterproof - Collar stands up to rough punishment, even submerged under water. Rechargeable Collar - Fast-charging, long life Lithium Ion batteries. Expandable - Add multiple dogs to the in-ground fencing system with additional INNOTEK® accessory collars (sold separately). Introducing ReadyTest™ Right collar fit indicator. Your dog’s comfort and safety depends on a proper collar fit. Too loose and the collar won’t work and too tight your dog won’t be comfortable. Only INNOTEK® UltraSmart™ collars emit a brief audible click to let you know the collar is on right and functioning properly. On-board systems check. Don’t leave your dog’s safety to chance. UltraSmart™ collars alert you to potential problems before it’s too late. After charging, UltraSmart™ collars automatically perform a vital systems check to ensure proper operation of the power and electronic circuits. A green light means all systems are functioning properly and a flashing red light indicates there is a collar problem. 3-way battery indicator. Never run out of battery power again. ReadyTest™ monitors battery levels in your dog’s collar. Green is more than half a charge, yellow means less than half and red means charge the collar at the next opportunity. AN INNOTEK® EXCLUSIVE! System Includes: Wall Mounted Interior Transmitter Collar Charger Collar Receiver 500 feet of Boundary Wire, Splices and Training Flags Training DVD Pre-Twisted Wire