12 Buttons Audio Outdoor Aluminum Slave Panel
DR-12US
The Commax DR-12US is a 12-button extension unit or sub-panel for a multi-button audio intercom system. It is an outdoor audio panel used for apartments or multi-household buildings. The model name indicates that it is a "U" series model, which stands for a single-row button door panel.
Key specifications
According to a user manual found on a2t.ro, which covers similar DR-nUS models, the general specifications for this series are as follows:
- Power Source: 12V, 500mA.
- Wiring: 3 wires in common, plus 1 individual wire for each unit.
- Communication: Hands-free.
- Temperature: Can operate in temperatures ranging from -10°C to +50°C, and has been tested down to -40°C.
- Dimensions (for DR-nUS models): Vary by the number of buttons, but the DR-nUS models generally share a similar form factor.