The L AC/DC LED transformer series can tolerate a full range of AC input while outputting a constant voltage. Can withstand 300VAC surge input for 5 seconds. Includes built-in protection against short circuit, overload, and over voltage. Fully insulated with an IP67 plastic case for potential outdoor use, and cools via air convection. The L series is a low-cost solution with great quality and reliability for small LED projects.