Home Automation Greeley. A Control4 system gives you the ability to log in to your home, and control it from anywhere in the world. You can open or close the garage doors, adjust the thermostats, turn off or on any light in your home, arm or disarm the security system, and a great deal more. This is a life saver when you leave your air conditioning on when you go on vacation. Log in to your home, and turn off the AC. The possibilities are endless. Let us show you how it works. Call today.