Wireless Control

I Have one large traffic light by our RR crossing. I need to add 4 more lights in the open yard. The 4 new lights will be no more than 800 yards from the first light. I want to transmit wireless to the other 4 lights. The receivers only need one dry contact each. Can anyone recommend a good system. Price is not a major factor but I dont need tons of I/O either.

Thanks
Bob Low
E&J Gallo Winery.

This will work: https://www.gegridsolutions.com/communications/catalog/mdswiyz.htm.

Nice stuff...
https://www.bannerengineering.com/us/en/products/wireless-sensor-networks/wireless-io-data-and-network-connectivity.html#all

BWI Eagle makes nice stuff

http://www.bwieagle.com