The weather station accepts power from the following alternative power supply sources:
- AC (mains) power 100–240 V AC, max. 6.8 A, 50/60 Hz
- Solar panel 15–28 V DC connection, max. 6 A each / 10 A combined (both inputs)
- External DC supply 24 V DC nominal (15–28 V DC), max. 10 A
- Internal backup battery 12 V DC / 24 or 28 Ah (1 or 2 pcs)
The system power is controlled by battery management unit BMU801. The battery management unit supplies power to the system when available from the backup batteries, AC (mains) connection, or external DC input. The battery management unit keeps the backup batteries fully charged and provides uninterrupted operating power, even during a power break in external supplies.
BMU801 powers the following:
- DMU801 data management unit
- Optional communication devices
- The power terminal strips that are used to distribute the operating and heating power to the sensors connected to the system