UL offers 3 basic types of certification safety marks, they are:
a) Listing Mark
b) Classification Mark
c) Recognized Component Mark
Additionally, they offer the Unlisted Component approval service.
Jerome Industries products are available with the listing mark or the recognized component mark, depending upon product type. Primary distinguishing characteristics as follows:
The product is fundamentally a "stand alone" type of product, and may to be sold without any additional hardware to the general public. In this case the product must comply with all possible UL regulations which might effect it.
The product is fundamentally a "stand alone" type of product, and may to be sold without any additional hardware to the general public. In this case the product can be evaluated to a variety of different standards (non-UL included), to varying degrees of completeness, the extent of the limitations must be marked on the product.
Recognized Component Mark:
The product is a "component" of a system, in other words, it has to be used with additional hardware to have functionality to the casual user. This type of product may have partial compliance to the UL standard tested to, typically user manual information and some unit marking info may be deemed unimportant at the component level, and could be disregarded. Area's which need to be addressed when integrating the component with the system, are outlined in the "Conditions of Acceptability" section of the UL report.
The same idea as the Recognized Component, however UL does not require that a mark be added to the product, and the product will not show up in the Recognized Component database, which is public domain information.
Additional clarification on these concepts is available on our website, click here. Alternately, you may go directly to the UL Glossary on these terms.