mainframe

local modem = peripheral.wrap("top")
local internal = peripheral.wrap("right")
internal.open(9898)
modem.open(4005)

while true do
    sleep(0)
    local event, modemSide, senderChannel, replyChannel, message, senderDistance = os.pullEvent("modem_message")

    if message == "toggledoor" and senderChannel == 4005 then
        modem.transmit(9898, 1111, "toggledoor")
        sleep(1)
    end
end