... Interphone,Five Party Talkback TK-T12(1-1)A 1.Five party talkback for interphone 2.Emergency ... 1-1)A Details Products Description:Technical parameters: 1.Various Type: TK-T12(1-1)A, TK-T12(1-1)B1, TK-EP220-12, TK-T12(1-1 ... )2A, TK-T12(1-1)49N, TK-T12(1-1) ... B2.Input voltage: AC220,50HZ3. Output voltage:DC12V/24V/6V4.AH:1 ...