What is the difference between UL listed and UL component recognized?
LISTING SERVICE - A service whereby Underwriters Laboratories Inc. (UL) determines that a manufacturer has demonstrated the ability to produce a product that complies with UL requirements with respect to reasonably foreseeable risks associated with the product. As part of the service, UL authorizes the manufacturer to use the UL Listing Mark on products that comply with UL requirements and establishes Follow-Up Service conducted by UL as a check of the means the manufacturer exercises to determine compliance with UL requirements.
RECOGNITION SERVICE - A service whereby UL determines that a manufacturer has demonstrated the ability to produce a component for use in an end product that complies with UL requirements. It takes into account the performance and constructional characteristics of such end product insofar as this can be determined and the areas that require additional consideration for application of the component to the product. UL authorizes the manufacturer to use the UL Recognized Marking.