Maybe, but if there’s no specific reason to choose your house, some may decide it’s less risk to break into your neighbor’s who don’t have that sign

Putting up a sign or window decal is the cheapest option, and supposedly does work some of the time

And if there really is an alarm monitored by one off those companies, they are supposed to see and respond. You’ve just wasted a little time giving them early notice and you’re no closer to your payoff. Better hurry