| Number in figure | Port | Purpose | DMU801 connector | Connector name in application |
|---|---|---|---|---|
| 1 | USB‑C | Service port. IP address: https://192.168.10.2 | USB | – |
| 2 | Ethernet 10/100 Mbps Base‑T 1 2 | Ethernet interface. IP address: configurable (default: 192.168.2.2) | X1 eth0 | ETH_X1 |
| 3 | 2‑wire RS‑485 2 | RS‑485 interface for sensor or telemetry device inside the weather station enclosure | X2 | COM_X2 |
| 3.3 V logic level GPIO pins, pulse count capable | Connection for switch or counter measurement | X2 | GPIO_X2.1 | |
| 3.3 V logic level GPIO pins, pulse count capable | Connection for switch or counter measurement | X2 | GPIO_X2.2 | |
| 4 | Battery | Lithium battery | Battery | – |
| 5 | SD card | Memory card, max. 32 GB | SD | – |
| 6 | Reset button | Restart and restore factory settings | Reset | – |
| 7 | Status LED | Indication of DMU801 operation mode | Status | – |
| 8 | RS‑232 / 2‑wire RS‑485 / SDI‑12 multiprotocol serial 2 3 | Serial interface for sensor or telemetry device inside the weather station enclosure | X3 | COM_X3 |
| 3.3 V logic level GPIO pins, pulse count capable | Connection for switch or counter measurement | X3 | GPIO_X3.1 | |
| 3.3 V logic level GPIO pins, pulse count capable | Connection for switch or counter measurement | X3 | GPIO_X3.2 | |
| 9 | 8–32 V DC input power, 24 V DC nominal | Input power | X4 | PWR_X4 |
| 10 | 2‑wire RS‑485 2 | Internal RS‑485 connection (reserved for Battery Management Unit BMU801) | X5 | COM_X5 |
| 11 | Grounding point | Equipment grounding | – | – |
| 12 | 24 V DC heating power | Heating power input connection for sensors connected to plug‑in units | X6 | HEAT_X6 |
1 Ethernet connection is
disabled by default (can be configured in the Web UI).
2 External surge protection is
recommended if connected devices are outside the weather station
enclosure.
3 SDI‑12 support in future releases.