Electrifies up to 7km of fence with light vegetation Powered by external 12v battery with internal D cell battery back up or mains power via adaptor or solar power Constant Power output Fast or energy conserving slow pulse rate High Power 0.86J / Low Power 0.43J Uninterruptable power when connected to the mains* or solar and using 12v back up battery Complete with earth stake and leads 3 year warranty