AP 257/51 KNX Outdoor Weather Station Wind Brightness Temperature 3 Facades 5WG1257-3AB51
The AP 257/51 KNX weather station is a mast or wall-mounted outdoor sensor unit for weather-responsive building automation. It measures wind speed from 2 to 30 m/s and provides three independent brightness sensors covering 1 to 100 klx, plus up to two external brightness sensor inputs for flexible placement. An outdoor temperature sensor covers -30 to +60°C. All measurement readings are transmitted via the KNX bus.
The device considers the alignment of up to three facades and automatically activates or deactivates solar protection when sunny. A safety alarm can deactivate solar protection based on an external safety object or logical AND/OR operations of the weather data. Four threshold switches provide two output objects each, and six logical AND, OR, or XOR operations support up to four input objects and two output objects each.
The integrated bus coupling unit connects via a bus terminal block, and the compact unit includes a mast fixture for diameters from 48 to 60 mm.
| Communication | KNX bus |
|---|---|
| Wind Speed Sensor | 2 to 30 m/s |
| Brightness Sensors | Three independent sensors: 1 to 100 klx Plus two external brightness sensor inputs |
| Temperature Range | -30 to +60°C |
| Facade Sectors | Up to 3 sectors |
| Control Features | 4 threshold switches 6 logic operations (AND, OR, XOR) |
| Mounting | Mast or wall mounting Mast fixture for 48-60 mm diameter |
| Dimensions | 121 × 108 × 227 mm |
- Automatic shading control
- Wind alarm systems
- Daylight harvesting
- Weather-driven facade control in commercial and residential buildings
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