Features: *Consist of 1*WiFi Visual Intercom Door Phone(built-in 8G TF card)+3*Wireless Doorbell Chime support snapshot, PIR motion detection, visual intercom, phone APP remote control for Door Entry Access Control. *HD 720P image quality, support night vision, camera view angle covers 166. *PIR motion sensor+ motion detection, WiFi connection, push alarm to mobile via APP, more safe and accurate. *Support visual intercom, IR night view, TF card record, built-in 8G TF card. *Support 2-way audio communication, answer your door wherever you are. *Support up to 32G TF card storage(not include),built-in 8G TF card. *Support two power modes optional: batteries or USB cable, (Both not included) very convenient. *1000ft/300m wireless working range in open area. *55 ringtones optional for you. *Easy to pair with the doorbell, easy for installation. Door Phone