Hi Daniel,
Not excatly sure what you mean by "radius of 50m in a few deposits with open shelves since their business is very specific" ?
But my concern with this posting is you mention the term radius. I hope you understand that the two antennas built inside the front of this hardened AP lobe the wireless signal forward, according to figure 1 and 2 below. The diagram below shows the wireless radiation patterm.
I will include two diagrams taken from Chapter three of the attached manual to illustrate my point. This attached manual also includes installation instructions i believe you requested.
If you purposely need a hardened directional wireless beam AP, the WAP200E is a reliable unit. But if a omnidirectional wireless signal is really what you need , why not try the lower cost WAP200 or even better a AP541.
regards Dave
Figure 1
figure 2