Test Phone

DR-700 - Daerim Electronics Co. (Daerim)

1. Insulation resistance measurement(earth-state, line-cut, line-short, and telephone capacity measuring) 2. Tone & pulse dialing3. Speakerphone for hands free two way conversation4. Subscriber calling5. Last number redial6. Hook and flash function7. High impedance monitor function8. Transmitter mute switch9. Continuous polarity LED indications10. Line powered with high voltage protection11. Water-proof