ETL LISTINGS AND INSTRUCTIONSETL LISTINGS AND INSTRUCTIONSE T L L I S T I N G S A N D I N S T R U C T I O N S
For a gate operator utilizing a non-contact sensor such as a photo beam:
See instructions on the placement of non-contact sensor for each type of application.
Care shall be exercised to reduce the risk of nuisance tripping, such as when a vehicle
trips the sensor while the gate is
still moving.
One or more non-contact sensors shall be located where the risk of entrapment or
obstruction exists, such as the perimeter reachable by a moving gate or barrier.
A har d wired contact sensor shall be located and its wiring arranged so that the
communication
between the sensor and the gate operator is not subjected to mechanical
damage.
A wireless contact sensor such as the one that transmits radio frequency (RF) signals to
the gate operator for entrapment protection functions shall be located where the
transmission of the signal
s are not obstructed or impeded by building structures, natural
landscaping or similar obstruction. A wireless contact sensor shall function under the
intended end-use conditions.
One or more contact sensors shall be located on the i
nside and outside leading edge of a
swing gate. Additionally, if the bottom edge of a swing gate is greater than 6 inches (152
mm) above the ground at any point in its arc of travel, one or more contact sensors shall
be located on the bottom edge.
For a gate operator utilizing a contact sensor such as an edge sensor:
G)
H)
1.
2.
3.
1.
2.
3.
3
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