| Post 9 made on Thursday May 26, 2016 at 00:26 |
hdsystems Long Time Member |
Joined:
Posts: | February 2005
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UL 325 added 3 requirements, in 2009, for remote operation.
The feature must be utilized only on an operator equipped with a secondary entrapment protection system such as a photoelectric sensor.
The feature must be activated only when the operator is installed on a sectional door.
The operator must be equipped with an audible and visual warning system indicating a pending motion for 5 seconds before the door starts moving.
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