Automated garage door opener is often referred to as an automated garage gate opener. It opens and closes commercial-grade garage gates with the help of electronic sensors that are located on the garage roof. Most garage gates have electrical contacts on their roofs that are activated when the gate is lifted or lowered. Garage gate openers come in two speeds. One is for normal operation and the other is for emergency. The openers intended for residential use are able to operate with the manual mode, whereas commercial use requires an automated mode.