The Aiphone DB-1SD hands-free sub station features a call tone volume control with mute indicator, receive volume control, All Call button, Talk button, and Off button. It connects via 4 wires to the DB-1MD master station. Up to 4 sub stations can be added to this master and communication is possible between the 5 total stations via the All Call button.
Features:
- Up to 5 stations per door call button
- All Call between stations in same residence
- Internal communication can be hands-free (VOX) or push-to-talk (PTT)
- Door release powered by door station without the need of an additional transformer
- Call tone volume control with mute indicator
- Receive volume control
- Optional Call Extension Sounder
- Backlit directory at door
- Simple two-wire connection for intercom and door release (Door strike wires directly to door station)
- 1, 2, or 4-call door stations for individual or multi-tenant applications
