The Snap-Lite 66 block line protector is designed specifically for Voice/Data professionals. The Snap-Lite provides voltage and current limiting capabilities. The unique multi-function diagnostic LED shows protection status, line continuity and line usage. 66 Block quick connect surge protector with LED indicator light. 25 Pack., SNAP-IT 66-Block 25-pk with Protection (08-23-10), UPC: 782980501509