Homeland Security and Emergency Services

Safety Alert

UL Warns of Counterfeit UL Mark on Medium Base Lampholder

Northbrook, IL - March 29, 2013 - The following is a notification from UL to consumers, retailers and manufacturers that the medium base lampholder identified below bears a counterfeit UL Mark for the United States and Canada.  This lampholder has not been evaluated by UL to the appropriate Standards for Safety and it is unknown if this lampholder complies with UL safety requirements for the United States or Canada.

Note that the Medium Base Lamp holder with the counterfeit UL Mark is similar to the UL Listed lampholder. The authorized UL Listed lampholder is marked with the model number "RS-1908A". The lampholder marked with a counterfeit UL Mark does not provide the required model designation on the lampholder body

Name of Product: Medium Base Lampholder, No Model Number

Identification: On product: The lampholder bears a counterfeit UL Mark and the marking below.
LISTED RUI CHENG 250V 660W  

What Should You Do:  Manufacturers of UL certified products that have used this lampholder are advised to contact UL at:
http://www.ul.com/global/eng/pages/offerings/perspectives/consumer/fieldreport/