led modules for channel letters (1)4leds/pc ,waterproof IP68 (2):60000--80000 working lifes (3):CE&Rohs with Three years warr led modules ... 5) Low heat, high brightness, works well under harsh,hot and cold conditions 6) Full range of colors: Red,Yellow , ... can be normally operated even in cloudy, rainy and snowy weather Applications: 1) Channel letter backlighting 2) Advertisement sign backlighting 3) ...