About the interval when installing EWF next to each other

If EWF are installed next to each other, they may interfere each other and cause a malfunction. Therefore, leave an interval as twice as the directivity angle.
The interval can be calculated below.
Interval = (tan directional angle x maximum working distance) x 2 times
EWF-1E series Direction angle 1 ° Interval (mm) = 35 x distance (m)

EWF-0E series directional angle 1.4 ° interval (mm) = 48 x distance (m) 

Also, make sure that the light reception level is not lit by the light from the devices nearby while the light of the communication partner is blocked.