CC Receiver

-- Receiver Script
-- Define rednet side and redstone output side
local modemSide = "top" -- Change to the side where your modem is
local redstoneOutputSide = "back" -- Change to the side where redstone output should be set

local receiverID = "UUID" -- Unique string ID to match transmitter

rednet.open(modemSide)

local function handleMessage(senderID, message, protocol)
    if protocol == receiverID then
        if message == "activate_output" then
            redstone.setOutput(redstoneOutputSide, true)
        elseif message == "deactivate_output" then
            redstone.setOutput(redstoneOutputSide, false)
        end
    end
end

while true do
    local event, senderID, message, protocol = os.pullEvent("rednet_message")
    handleMessage(senderID, message, protocol)
end