The S40 is the ultimate energiser for fencing of up to 5 km. The energiser is quick to install and easy to transport. The energiser will work for 3 weeks without sunlight and has a built-in lightning conductor. This makes the S40 an excellent alternative to a battery-operated system. The S40 is quick and easy to install and convenient to transport. This robust and highly portable unit makes a great alternative to battery-powered systems. Works for up to 3 weeks without sun and is capable to power through the harshest winters, Super tough, drop resistant, waterproof casing, Quick and easy install, Built-in lightning protection Register now and receive 3 years of warranty on this product!