- Door control expansion module for Dahua video door phones.
- Required to control a second door.
- It must be connected to an outdoor unit.
- Storage of 5000 cards.
- Push button input.
- Door status indicator input.
- NO and NC outputs.
- Operating temperature: -10°C to +60°C.
- Operating humidity: 10% - 95%.
- Power supply: 12 VDC.
- Power: max 1 W.
- Dimensions: 58 x 51 x 25 mm.
- Weight: 560 g.