The Amcrest Video Doorbell Camera is powered by using your home's existing doorbell wiring (16V-24V) and is compatible with existing traditional mechanical and electronic digital chimes to provide surveillance of all front door activity in high definition 1920x1080p resolution. This home security camera features an extra-wide 140° viewing angle allowing you to cover every angle. This doorbell is not battery powered. Built in microphone and speaker allows for two-way audio and makes it easier to talk to visitors without having to get up and answer the door. Includes two interchangeable faceplates, choose from a black or silver faceplate. The Amcrest Video Doorbell Camera is RTSP stream compatible. Our WiFi Doorbell Camera works with 2.4GHz only, and does not support 5Ghz Networks. Built in night vision allows you to see in the dark, up to 16 feet away. PIR Motion Sensor lets you receive motion detection alerts via email or push notifications and instantly review recorded footage directly from your smartphone using the Amcrest Smart Home app. Securely store your HD footage to the Amcrest Smart Home Cloud or store directly to a class 10 MicroSD card up to 128GB. (MicroSD Card Not Included, Limited compatibility with Amcrest View Pro, Not compatible with Amcrest Cloud). At Amcrest, you’ll receive a full 1-year US Warranty and Lifetime technical support provided directly from Amcrest. You will also receive a 1-Year Free SmartHome Cloud Subscription. The Amcrest SmartHome WiFi Video Doorbell Camera works with the Amcrest SmartHome Deterrent Camera (ASIN: B07WK8FH3X), SmartHome PT Camera (ASIN: B0831TQHMP, B0821Q23GF) & SmartHome Outdoor Camera (ASIN: B0835WQHZY, B083TLW9JL). Compatible with any 16V, 30VA Doorbell Transformer ASIN: B001POBN92.