2 Joule PLUG-IN Energizer: Energize your Electric Fence and keep your animals safe from predators, out of gardens, and away from roads and other hazards Powerful and Economical: Power up to 2700 feet (16 rolls) of RentACoop's Electric Fencing, at an average cost of a few dollars a year Versatile and Easy to Install: Plug-In Energizer can be installed indoors or outdoors (it is recommended to shelter unit from direct rainfall). Set up in minutes and connect to a GFCI power source We Thought of Everything: Durable construction; Brief, safe shock teaches animals to avoid the fence; Comes with Instruction Booklet and link for Video Instructions What's in the Box: 1 2J Plug-In Energizer; 1 Grounding Cable; 1 Fence Connector Cable; Hardware. ALSO REQUIRED: Voltmeter Fence Tester; Grounding Rod; 14G Insulated Wire. OPTIONAL: Wire Strippers RentACoop has always been passionate about introducing others to the joy of chicken-keeping, and we are now at the leading edge of the market in developing high-quality, innovative products for poultry and small animals. From Feeders, Waterers, and Chick Supplies, to Electric Fencing, DIY, and Enrichment products, we strive to make caring for your animals an easier and more enjoyable experience! Every one of our products is designed to address common challenges in backyard chicken-keeping and homesteading: reducing waste, ease of use and maintenance, protection against predators, pest deterrence, and safety. And every one of our products is thoroughly tested at our own small farm in Maryland. RentACoop’s caring team of Product Specialists and Customer Service Eggsperts is dedicated to delivering the highest quality products and customer experience for you and your flock!