RX Series protection has been tested and proven effective. The RX 100-20 features the Juice Goose Hybrid Filter Technology to improve electronic performance and protect against power line voltage surges and high frequency interference on the hot, neutral and ground leads. Juice Goose RX Series power protection technology works against ground line (common mode) as well as hot-neutral (normal mode) surge events. While common mode surges and disturbances don't typically cause catastrophic damage, they can result in operating failures and improper performance of digital processing equipment. Since a power anomaly of  even 1 or 2 volts on logic ground can cause problems, the RX Series is designed to have a voltage surge  let through of only 0.50 (one half) volt on the ground.