The DE-120 by Dare is an Enforcer Series, 110 Volt Plug In Electric Fence Energizer with .3 Joule output (3/10). With ultra low impedance, the Enforcer Series energizers are the best choice and better value when there is power available 

The DE-120:

• Is extremely effective in keeping electric fences continuously energized
• Controls up to 5 acres, and outperforms energizers rated for 5 miles
• Controls horses, cattle, pigs, and dogs
• Suggested for smaller pastures
• Recommended for no more than 300 feet of fencing
• One year warranty, including lightning from date of purchase.
• Repairable with components available from Dare Products

See our Selection Chart for helpful information on choosing the right energizer.