The Surge Protector is ideal for home/office protection with 1500 joules, 1 outlet, and a wall tap plug. The single outlet surge suppressor is perfect for environments where only a single device will require power protection. It works great for protecting personal computers, wireless/VoIP routers, cable/Dsl modems, tablet chargers, and other personal electronics. Emi/Rfi Filters Filters against electromagnetic interference and radio frequency interference, ensuring clean power for connected equipment. Iso and Safety Certifications All CyberPower's manufacturing facilities are Iso-9001 Quality Tested. CyberPower's products are also Ul Listed and Csa Certified. Sturdy Case Constructed of impact-resistant material for maximum durability.