WN90SDI Weather Station with SDI-12 Interface and Protocol

Features

1. Wired SDI-12 interface for easy integration with professional data acquisition systems;
2. Measures temperature, humidity, barometric pressure, rainfall, wind speed & direction, light, UV (no solar panel);
3. Wind, gust, and direction measured every 1 second (WMO standard); other parameters every 8.5 seconds; battery voltage every 10 minutes;
4. Sloped surface design(rain sensor) for improved rainfall accuracy;
5. Temperature compensation design(US Patent No.12,181,491B2) reduces thermal interference from sunlight or heater power supply;
6. Fully electronic, no-moving-parts design for long-term durability;
7. Hardware Wiring:
   Red — VCC, DC 6V-12V
   Black — GND power supply
   Green — SDI-12 IO
   White — Vacant

Note on Internal Heating Function

The WN90SDI includes a built-in thermostat that controls the internal heating plate:

• Automatically turns ON when the ambient temperature falls below 0°C (32°F)
• Automatically turns OFF when the temperature rises above 10°C (50°F)

To activate the heating element (for snow or ice melting), a 12V / 1A power supply must be provided. 

Important: Potential ice crystal formation at temperatures below 0° C/ 32 °F can affect the wind reading accuracy. Running the heater can avoid this effect

Package Contents

1 x  WN90SDI unit
1 x  User Manual
1 x  SDI-12 Communication Cable (Extension Cable), 2m

Note:

1. The USB/TTL-SDI12 VER5.2 module and USB Type-A to USB Type-B cable are not included. Please purchase separately.
2. Recommended: 1-inch pole (not included).