1.0 Megapixel Use the phone to see who is ring the doorbell or talk with visitor Replace the traditional door bell Press the door bell then will send a call to your phone Cloud storage Use App to see each visitors Real-time to see who is on the front of the door Two way Audio Built-in 8G TF card Keep recording to Sd card for all visitors WIFI: 802.11 a/b/g/n WIFI range: Up to 50m outdoor ; Up to 30m indoor WPS  Radio Frequency: 868.4MHz EU; 908.4MHz US;921.4MHz ANZ;869.2MHz RU RF range: Up to 50m outdoor ; Up to 30m indoor Night Vision App: Android or iOS  Waterproof Power supply： 5V/2A DC Operational temperature:0-40℃