What are the UL requirements for remote operation of residential garage doors from mobile devices?

There are UL requirements for a residential garage door operator to be enabled for remote operation from a smartphone, tablet, or other portable devices.

UL 325 was revised in 2009 allowing unattended operation features. Several key provisions must be met for such 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.