SMART PA TELEPHONE MODEL-DTHS-III OPERATOR CONSOLE:

1) AC Powered 110/220 VAC.

2) 50 STATION Phonebook.

3)Ringer Indicator.

4) Phone line: 24 VOLTS (EPBAX)/50 VOLTS TELEPHONE LINE.

5)S-MIC jack.

6)Noise canceling electret microphone.

7)FULL DUPLEX COMMUNICATION

8)Hand Free Speaker Phone.