Aiphone DB-1MD Hands Free Master Station

For DB Series Hands-Free Audio Only Entry System

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  • Used with DA Series Door Stations 
  • Communication is possible between all the stations via the All Call button 
  • Internal communication is hands-free (VOX) or push-to-talk (PTT) 
  • Call tone volume with mute indicator 
  • Receive volume control 
  • Support for adding a call extension sounder (available separately) 
  • Simple 2-wire connection between the intercom and door station 


For Use with

DA Series Door Stations in the DB Series Hands-Free Audio Only Entry System

Power Source

15 VAC, PT-1211C (not included)


Hands-free (VOX) after the Talk button is pressed once, or push-to-talk (PTT)


1 door station (with 1, 2, or 4 button), 5 stations per call button


2-conductor, PE insulation

Wire Length

Door to Master Station: 1020.0′ (310.9 m)
Master to Farthest Sub Station: 330.0′ (110.6 m)
Talk Path: Single channel

Operating Temperature

32 to 104°F (0 to 40°C)

Dimensions (HxWxD)

7.31 x 3.12 x 1.06″ (185.60 x 79.25 x 36.92 mm)


0.62 lb (0.28 kg)


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