Based on SIP 2.0 and Android 5.1, this IP door phone for indoor use with Full HD (1920х1080р) resolution, a 5-inch 1280х720 IPS Multi Touch Screen, built-in Wi-Fi, Mifare prox card reader, Bluetooth 4.0, LTE, USB, RS485, RJ45, Wiegand, Relay can be used in houses, residential complexes, office buildings, and hotels.