11
Installation (continued)
Site Preparation for Safety Devices
Every installation is unique. It is the responsibility of the installer to ensure the barrier arm gate operator is installed
in a safe manner. If the area surrounding the barrier arm gate operator is expected to have high pedestrian trac, it is
recommended that safety devices, such as Liftmaster photoelectric sensors or wireless edge sensors, be installed at
the site. See “Safety Devices” on page 57 for acceptable devices.
B
A
A
B
Bird’s Eye View Ground-Level View
A Non-contact
sensor
When a non-contact sensor is used, it is recommended to permanently x the sensor under the
path of barrier arm. Recommended to mount sensor between 21”-27” above grade.
WARNING: Never use a non-contact sensor, microwave sensor OR any motion activated
detection device to provide a close command to the barrier arm operator. This can be
dangerous and is not recommended.
B Contact
sensor
When a contact sensor is used, it should be mounted to the bottom of the barrier arm in the
existing channel. A wireless edge sensor is the only contact sensor supported by this system.
This system does not support a hardwired edge sensor.
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