SurgeX SX-DS-158-GFI Defender Rackmount - 15A, 120VDesigned with patented non sacrificial Multi Stage surge suppression technology, the Defender Series line protects AV equipment from electrical transients that can cause disruption to the system. Its three stages of protection ensure equipment is safeguarded from the harmful effects of surge energy and its advanced filtering virtually eliminates normal and common mode electrical noise interference that can cause reboots and downtime. Features Lowest