With a crystal clear video, sharp audio and massive 160° wide angle fisheye lense. This intercom is perfect for your home or small business. Can be surface or flush mounted and is 100% weather resistant. Supports external lock control for your front door, garage, gate or other entry requirements. The companion app will allow you to answer and unlock your desired entry from any internet connected location in the world. Visit the Dahua website for more details: click here