F31-C user manual

to incline more than 1.5° to prevent mutual interference.
When two or more sensors are installed on the same plane and in the same
direction, it is recommended to tilt more than 1.5° to prevent mutual interference.
Due to the cone-shaped scattered emission of the sensor light spot, it is
recommended that the laser obstacle sensor be installed at a height of
≥200mm from the ground. If the installation height is less than 200mm
from the ground, it is recommended to tilt 1.5°.