local modem = peripheral.wrap("top")
rednet.open("top")

local monitorID = 15
local isOn = false

function WaitAndRelay()
    while true do
        local sender, message = rednet.receive()

        if string.find(message, "<on>") and isOn == false then
            redstone.setOutput("front", true)
            print("Received On call")
            isOn = true
        elseif string.find(message, "<off>") and isOn == true then
            redstone.setOutput("front", false)
            print("Received Off call")
            isOn = false
        else
            print(message)
            rednet.send(monitorID, message)
        end
    end
end

WaitAndRelay()