Check the listing for details. Scientific Atlanta Laser Link Modular Optical Reverse Receiver ELLRR-S 253897. Condition: New. Listed at 90.00 USD. The ELLRR-S Reverse Receiver (ELLRR-S) receives analog or data upstream signals from a node or a hub location. Up to 14 modular return receivers can be housed in the Laser Link Mainframe or 4 modules in the Laser Link Mini-mainframe, offering compact installation, improved system reliability and a telemetry interface for Network Management (status monitoring). Common Features Front fiber entry connector Easily accessible test points Front panel gain controls Front panel LEDs for easy set up TTL outputs for redundant switching 1310 or 1550 nm optical input operation SC/UPC or SC/APC connectors Redundant powering options available Network Management (status monitoring) ready ELLRR-S Features Half-width module Optical AGC High output plug-in pad 5-210 MHz bandwidth