The SurgeX SA-20 Standalone Surge Eliminator is engineered to protect sensitive electronics from electrical surges, spikes, transients and noise that can cause disruption and catastrophic damage. The SA-20 is perfect for audio, video, security, computers, laboratory and test equipment. Featuring Advanced Series Mode surge elimination technology, the SurgeX SA-20 is particularily well suited for equipment that relies on audio and video performance. Unlike common MOV-based protection devices that can degrade and fail, our patented protection technology is non-sacrificial and eliminates surge energy up to 6,000 volts without producing harmful side effects such as ground contamination or common mode disturbances that can degrade the performance of AV systems.