Medium intensity LED obstacle lights are available in Red/IR, White, and Dual . The L550 incorporates the most advanced optical engineering design and LED/IR technology enabling the development of the most cost effective solution for the medium intensity obstruction light market. The L550 product is focused on minimizing the visual impact that obstacle lights can have on the surrounding environment, while at the same time allowing for visibility where NVG technology is required. The L550’s unique design can be complimented by the integration of the TWR DMCIP interactive QLI Compliant SNMP monitoring system that allows for system interrogation and programing remotely. In addition the unique system design allows for a single controller and single cable installation even with multiple flash heads and makes the lights simple to install, enables them to operate reliably under the harshest conditions and minimizes both the capital costs and cost of ownership over the 20 year system design life.