... ICAO and FAA- L810 Aviation obstruction lightAviation obstruction light for marking towers (Telecom, GSM, Microwave & TV ... ), cranes, hoists, smokestacks, buildings, sport stadiums, light pylons, high voltage towers and any other potentially hazardous ... traffic with a steady or flashing red safety light. Specifications DescriptionParameterSupply voltageAC220V DC12V~DC24V / DC48V (optional ...