Gallagher's M60 Energizer has built-in lightning protection and was tested under extreme conditions to ensure unbeatable reliability. Clean Fence: 10 miles / 40 acres - Typical Fence: 3 miles / 20 acres 0.6 Joules of stored energy Check power at a glance with the power-on indicator Easy to use and install with simple fence terminals and hassle-free mounting Compliance with latest UL Standards guarantees safety and reliability Simple "plug and play" installation