The Stafix M63RS energizer can deliver up to 63 joules output energy when required making it the most powerful energizer in the world. It has the ability to sense changes along the fence line and automatically adjust the output energy to match the requirement maximizing safety, while providing ideal stock control. The Stafix M63RS has been through extreme environmental testing to ensure that it exceeds the demands encountered on any game park or farm, making it the ideal energizer for large properties with extensive electric fencing systems. M63R model available without remote. Uses 220/240 volt power source.