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16 Digits LCD16 Ringer ToneIDD Lock and CalculatorFSK/DTMF system auto-detectionCalendar, Timer display functionRedial from Caller ID Function..

Plug into 220V AC powerOutput sensitivity :< 60mV (Frequency 1000Hz)Frequency response: +_3dB (300Hz-3400Hz)Intercom working current :< 100mAProduct Type: Apartment IntercomColor: WhiteDial PhoneCommon Key PhoneHandsfree PhoneWithout DisplayDial: DTMFOrigin: China# Dial Phone# Common Key Phone..