main

rednet.open("right")
rs.setOutput("top", true)

function main()
  id, message = rednet.receive()
  if message == "open" then
    rs.setOutput("top", false)
    print("Open")
  end
  if message == "close" then
    rs.setOutput("top", true)
    print("Close")
  end
end

while true do
  main()
end