... span reachs 50,000 hours. 4), Built-in or external constant current driver. 5), Overtemperature automatic protection function. When environment temperature ... 30V, the output current of built-in constant current driver will be shutdown in order to protect the LED without damage, and ... colors: Red, green, blue, yellow, white 27W led underwater boat light waterprotection IP68 with 316 stainless steel , ...