There are product like this in industrie since a long time. We use it for crane application since the late 90s I think for about up to 100m. Example. https://w

There are product like this in industrie since a long time. We use it for crane application since the late 90s I think for about up to 100m. Example. https://www.leuze.com/en/usa/products_us/data_transmission_control_components_us/data_transmission_us/ddls_5_us/selector.php https://www.leuze.com/en/usa/products_us/data_transmission_c...