DoorRemote

local modemSide = "back"
rednet.open(modemSide)

print("Door Remote Control")
print("Type 'open', 'close', 'status' or 'exit'")

while true do
    io.write("> ")
    local cmd = read()
    if cmd == "open" or cmd == "close" or cmd == "status" then
        rednet.broadcast(cmd, "door_control")
        local id, response = rednet.receive("door_control", 15)

        if response then
            print("Response: " .. response)
        else
            print("No response (timeout).")
        end
    elseif cmd == "exit" then
        break
    else
        print("Unknown command.")
    end
end