UL - 634 BULLETIN
UL Standard for Safety Connectors and Switches for Use with Burglar-Alarm Systems
|Publication Date:||28 October 2016|
A product intended for indoor use shall operate in its intended manner and shall comply with the requirements in 25.2 and 26.2.1 following the corrosive atmosphere tests described in 26.3.1 - 26.4.2 or Section 26A, Alternate Corrosion Test (21-Day). Products intended to be exposed to weather shall be subjected to the corrosion tests described in the Corrosion Tests - Outdoor Use, Section 48.