This is an intelligent garage door controller, you can open/close and monitor your garage door or gate from anywhere. It will make your home smarter. Features: You can open or close the garage door by the APP, and authorize multiple people you trust to access your garage. You can activate your garage door opener by placing a voice Compatible with Amazon Alexa or Google Home. Can be connected to an alarm and will activate the alarm system when the garage door is opened by a stranger. You can check whether the garage door is open or not on APP without getting out of the car. When the garage door is opened or closed, it will remind you in time to make your life safe. Quick and easy installation and convenient operation. Specifications: Main color: black Material: platics Suitable door weight: 30-500 (kg) Suitable door width: 2000-8000 (mm) Closing speed: 200mm/s Item size: 92 * 45 * 22mm / 3.6 * 1.8 * 0.9in Item weight: 380g / 13.4ounce Package size: 156 * 110 * 55mm / 6.1 * 4.3 * 2.2in Package weight: 400g / 0.9lb Packing List: 1 * Intelligent Garage Door Controller 1 * Set of Mounting Accessories 1 * User Manual