Powers up to 40 km / 60 acres. 4.0 J output energy and 6.3 J stored energy. Requires x4 earth rods FEATURES: ? Indicator light (pulse) indicates the Energizer is working ? Large terminals ? make inserting wires and getting a good connection easy ? Versatile mounting options ? can be mounted on a wall, post or fence wire ? Versatile power options ? battery leads sold separately ? Included in packaging ? user manual and mains power adaptor ? 2 year warranty ? Complies with EU safety standards A11 and A12.