Zmodo Greet - Smart WiFi Video Doorbell with a Zmodo Beam WiFi Range Extender Answer the door wherever you are - see and speak to visitors directly from your smartphone Easy setup - use existing wiring for quick installation and connect to WiFi using the free app. Use Beam to easily set up Greet. With Beam Connect, setup is as simple as telling the Zmodo app how many devices arepowered on andready to pair. Personalized voice message - a recorded message will play when you can't answer the door Smart motion detection - receive an alert and a recorded video clip whenever motion is detected. On demand access - access 720p HD live video at any time from your smartphone or the web 3 Years Warranty-US Warranty and Lifetime Support.No monthly fees or service contract required.