Control-Base

-- Choose rednet modem side
local side = "back";

-- Open Rednet
rednet.open(side)

-- Now create the main function
local function main()
    local args = { os.pullEvent() }
    if args[1] == "rednet_message" then
        -- This is the senderid of the computer
        local senderid = args[2]
        -- This is the message
        local message = args[3]
        -- Pass the message to the action function
        action(message)
        -- Log messages
        print("Received: " .. tostring(senderid) .. " > " .. tostring(message))
    end
end

-- Now create the control function
local function action(message)
    if (message == "lights") then
        -- Example turn out lights
    elseif (message == "") then
        -- Empty for you
    elseif (message == "") then
        -- Empty for you
    end
end

-- Run function
main()