The 7-in-1 outdoor sensor array (WS90SDI) is designed as a hard wired sensor using a SDI-12 interface. Not suitable for use with gateways or display consoles. The outdoor sensor also measures temperature, humidity, wind speed, wind direction, rainfall, UV level and light intensity. It requires mounting on the top of a 1 inch pole to ensure accurate readings and is hardwired using the SDI-12 interface cable for data collection. Features Wired SDI-12 interface for easy integration with professional data acquisition systems Measures temperature, humidity, barometric pressure, rainfall, wind speed & direction, light and UV Wind, gust, and direction is measured every 1 second (WMO standard); other parameters every 8.5 seconds; battery voltage every 10 minutes Sloped rain sensor design for improved accuracy Temperature compensation design (US Patent No.12,181,491B2) reduces thermal interference from sunlight or ice heater Fully electronic, no-moving-parts design for long-term durability Hardware Wiring: Red — VCC, DC 6V-12V Black — GND power supply Green — SDI-12 IO White — Vacant 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 plate 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 Included The Ecowitt WS90SDI includes the following items: Wired 7-in-1 external WS90SDI sensor array 2 meter SDI-12 interface connecting cable User manual Technical & Manual External 7-in-1 wired sensor suite (WS90SDI) Outdoor temperature and humidity Wind speed, gust speed, and wind direction Haptic rainfall sensor Solar light intensity UV index Powered with 6v to 12v via SDI cable SDI-12 Interface with hard wired connection (no wireless) Requires mounting onto top of 25mm / 1 inch pole (available separately)
