How to make a Touch Sensor into a Clickable Button?

I've taken some code from a friend, and the way they have written it means that a player has to touch a block for it to change a signal.

It would be better for it to be touch because we could save a lot of space, and reduce the chances of an error.

Here's the code:

local TweenService = game:GetService("TweenService")

local RELOAD_ENABLED = true -- Reload this script. Sometimes it may not work.
local TIME_BEFORE_RELOAD = 30

local disable = false
local reloadd = true

local st = script.Parent.Parent.SignalB
local stdeb = false
local sb = script.Parent.Parent.SignalT
local sbdeb = false

local stg, sty, str = script.Parent.SignalTopGreen, script.Parent.SignalTopYellow, script.Parent.SignalTopRed

local sbg, sby, sbr = script.Parent.SignalBottomGreen, script.Parent.SignalBottomYellow, script.Parent.SignalBottomRed

local re = script.Parent.Reload

local function Tween(instance, properties)
    TweenService:Create(
        instance,
        TweenInfo.new(0.5, Enum.EasingStyle.Quint, Enum.EasingDirection.Out),
        properties
    ):Play()
end

spawn(function()
    re.BrickColor = BrickColor.Black()
    wait(TIME_BEFORE_RELOAD)
    re.BrickColor = BrickColor.new("Bright violet")
    reloadd = false
end)

stg.Touched:Connect(function()
    if disable then return end
    if stdeb then return else stdeb = true end
    Tween(st.LightGreen1, {Color = Color3.fromRGB(0, 255, 0)})
    Tween(st.LightYellow1, {Color = Color3.fromRGB(27, 42, 53)})
    Tween(st.LightRed1, {Color = Color3.fromRGB(27, 42, 53)})
    wait(0.5)
    stdeb = false
end)

sty.Touched:Connect(function()
    if disable then return end
    if stdeb then return else stdeb = true end
    Tween(st.LightGreen1, {Color = Color3.fromRGB(27, 42, 53)})
    Tween(st.LightYellow1, {Color = Color3.fromRGB(255, 170, 0)})
    Tween(st.LightRed1, {Color = Color3.fromRGB(27, 42, 53)})
    wait(0.5)
    stdeb = false
end)

str.Touched:Connect(function()
    if disable then return end
    if stdeb then return else stdeb = true end
    Tween(st.LightGreen1, {Color = Color3.fromRGB(27, 42, 53)})
    Tween(st.LightYellow1, {Color = Color3.fromRGB(27, 42, 53)})
    Tween(st.LightRed1, {Color = Color3.fromRGB(255, 0, 0)})
    wait(0.5)
    stdeb = false
end)

sbg.Touched:Connect(function()
    if disable then return end
    if sbdeb then return else sbdeb = true end
    Tween(sb.LightGreen1, {Color = Color3.fromRGB(0, 255, 0)})
    Tween(sb.LightYellow1, {Color = Color3.fromRGB(27, 42, 53)})
    Tween(sb.LightRed1, {Color = Color3.fromRGB(27, 42, 53)})
    wait(0.5)
    sbdeb = false
end)

sby.Touched:Connect(function()
    if disable then return end
    if sbdeb then return else sbdeb = true end
    Tween(sb.LightGreen1, {Color = Color3.fromRGB(27, 42, 53)})
    Tween(sb.LightYellow1, {Color = Color3.fromRGB(255, 170, 0)})
    Tween(sb.LightRed1, {Color = Color3.fromRGB(27, 42, 53)})
    wait(0.5)
    sbdeb = false
end)

sbr.Touched:Connect(function()
    if disable then return end
    if sbdeb then return else sbdeb = true end
    Tween(sb.LightGreen1, {Color = Color3.fromRGB(27, 42, 53)})
    Tween(sb.LightYellow1, {Color = Color3.fromRGB(27, 42, 53)})
    Tween(sb.LightRed1, {Color = Color3.fromRGB(255, 0, 0)})
    wait(0.5)
    sbdeb = false
end)

re.Touched:Connect(function()
    if not RELOAD_ENABLED then return end
    if reloadd then return end
    reloadd = true
    disable = true
    re.BrickColor = BrickColor.Black()
    wait(0.75)
    stdeb = false
    sbdeb = false
    Tween(sb.LightGreen1, {Color = Color3.fromRGB(27, 42, 53)})
    Tween(sb.LightYellow1, {Color = Color3.fromRGB(27, 42, 53)})
    Tween(sb.LightRed1, {Color = Color3.fromRGB(255, 0, 0)})
    Tween(st.LightGreen1, {Color = Color3.fromRGB(27, 42, 53)})
    Tween(st.LightYellow1, {Color = Color3.fromRGB(27, 42, 53)})
    Tween(st.LightRed1, {Color = Color3.fromRGB(255, 0, 0)})
    wait(0.75)
    disable = false
    wait(TIME_BEFORE_RELOAD)
    re.BrickColor = BrickColor.new("Bright violet")
    reloadd = false
end)