Bests & Worsts Reviews from Amazon

For this item, BE112234-10 (10ft/3m Cord), the box has these Technical Specifications: Continuous Duty Electrical Rating: 125V/15A/60Hz/1875W Maximum Energy Dissipation: 4156 Joules H-N: 2052 Joules H-G: 972 Joules N-G: 972 Joules Phone Line: 160J Joule is a measurement o fenergy a surge protector component can absorb. A higher joule rating reflects higher-quality surge protection and longer product life. Maximum Spike Current: 216,000A H-N: 120,000A H-G: 48,000A N-G: 48,000A Maximum spike current is measured by amperage. Higher amperage rating reflects greater absorption capacity against lightning or sudden dramatic power spikes. UL Clamping Voltage (3-Line): UL 1449 330V Response Time: <1 Nanosecond A rating of <1 nanosecond indicates a response time to prevent disturbances before harming equipment is less than 1 billionth of a second. EMI/RFI Noise Filtration: 150kHz~100Mhz up to 75 dB Reduction Electromagnetic interference/radio frequency interference causes AC-line contamination that leads to computer lockups, audio video interference, and data loss. The greater the decibel reduction across a wider frequency range, the greater the clean protection. Product Features (on the back of the box): -Includes Belkin Lifetime Product Warranty -Features detachable clip to help you manage and hide multiple cables -Offers secure wall-mount option for added convenience -Protects electronics such as telephones and DSL/cable lines -Provides 1-in, 1-out coaxial-cable protection for your home-theater equipment -Features 1-in, 1-out RJ45 ports to protect your Ethernet connections EDIT: Here's a photo of the box and back of product showing clamping voltage as 330V for BE112234-10.