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8. Coverage Pattern Masking (DT8300-CPM) 
A set of 60° masks are provided for masking undesired areas. Attach the masks on the outside of the detector. 
With the supplied masks, you can mask 60°, 120°, 180° or 240°. Refer to the following examples: 
 
Note: To mask a certain area, attach the mask on the opposite side of the sensor, referring to the following examples.