Thor Technologies C2 Smart duo quick facts in 1 minute. Includes the facts that this model has the ability to protect against larger surges because of its class leading Joule rating. The filtration allows for many benefits including reducing or eliminating programming glitches with appliances like dishwashers, fridges and dryers to removing or reducing unwanted thumping or hissing noise from AV equipment. Many more features and benefits are not mentioned and can be viewed with full product video.