Product Info Catalog Outdoor Landscaping Fencing Enforcer Series Electric Fence Energizer, 20 Acre, Plug-In, 110-Volt Enforcer Series Electric Fence Energizer, 20 Acre, Plug-In, 110-Volt Request a Quote UPC: 38923032327 SKU: 133899 Model Number: DE 120 Enforcer series, electric fence energizer, .30 joule output, 110v plug in, ultra low & low impedance, controls up to 20 acres of overgrown fence, outperforms energizers rated for 5 miles, controls cattle cows, horses, pigs & dogs.