The 6000 series electric strikes are UL1034 listed. As part of that testing, the strike is subject to a Variable Ambient Test which has the following standards:
A product other than the locking mechanism shall function as intended at the test voltage with its related equipment at ambient temperatures of 0 and 49° C (32 and 120° F).
A locking mechanism or any other product intended for outdoor use shall function as intended at the test voltage with its related equipment at ambient temperatures of -35 and +66° C (-31 and +151° F).
The exposure to any of the temperatures specified shall be 4 hours or more.
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