1. Introducció
This manual provides detailed instructions for the installation, operation, and maintenance of your Ecowitt WS3900 Wi-Fi Weather Station. The system includes a multi-function WS69 outdoor sensor and a 7.5-inch color LCD indoor console (WS3900_C), designed to provide comprehensive weather monitoring data.
2. Components del producte
The Ecowitt WS3900 Weather Station consists of two primary units:
2.1. WS69 Outdoor Sensor Array
The WS69 is a 7-in-1 wireless outdoor sensor array that measures various environmental parameters. It integrates a thermohygrometer, rain gauge, wind speed sensor, wind direction sensor, light sensor, and UV sensor. The unit is powered by two AA batteries (not included) and supplemented by a solar panel for extended operation.

Figure 1: WS69 Outdoor Sensor Components
2.2. WS3900_C Indoor Console
The WS3900_C is a 7.5-inch color LCD display console that serves as the central hub for your weather data. It features an integrated indoor temperature/humidity sensor and a barometric pressure sensor. The console supports 2.4 GHz Wi-Fi connectivity, allowing data to be viewed remotely via the Ecowitt app or web browser. It also functions as an IoT gateway for pairing with other Ecowitt IoT devices (sold separately).

Figure 2: WS3900_C Indoor Console Display and Controls

Figure 3: Ecowitt WS3900 Weather Station Overview

Figura 4: Dimensions del producte
3. Guia d'instal·lació
3.1. WS69 Outdoor Sensor Installation
- Instal·lació de la bateria: Open the battery compartment on the WS69 outdoor sensor. Insert two AA batteries (not included), ensuring correct polarity. Close the compartment securely.
- Lloc de muntatge: Choose an open location for the outdoor sensor, free from obstructions that could affect wind, rain, or sunlight measurements. Ensure it is easily accessible for maintenance.
- Muntatge: Mount the WS69 sensor onto a pole with a diameter of 1 to 2 inches (approximately 2.5 to 5 cm). Ensure the sensor is level using the integrated bubble level. The solar panel should face south for optimal charging.

Figure 5: Outdoor Sensor Placement and Remote Monitoring

Figure 6: 100M RF Communication Range
3.2. WS3900_C Indoor Console Setup
- Powering the Console: The console can be powered by a DC 5V 1A adapter (not included) or by three AA batteries (not included). Insert batteries into the compartment on the back, or connect the DC adapter.
- Configuració Wi-Fi: The console requires Wi-Fi connectivity to upload data to the Ecowitt cloud. There are two methods for Wi-Fi setup:
- Aplicació Ecowitt: Download the Ecowitt app on your smartphone or tablet and follow the in-app instructions for Wi-Fi setup.
- Web Interfície: Accedir a la consola web interfície navegant a
192.168.4.1en a web browser when connected to the console's temporary Wi-Fi network during setup.

Figure 7: Wi-Fi Connection and Cloud Upload Diagram
4. Instruccions de funcionament
4.1. Displaying Data on WS3900_C Console
Once the outdoor sensor and indoor console are set up and connected, the WS3900_C console will display a variety of weather data. This includes outdoor temperature and humidity, wind speed and direction, rainfall data (daily, weekly, monthly, yearly, total), UV index, light intensity, indoor temperature and humidity, barometric pressure, and a weather forecast.

Figure 8: Home Weather Forecast Display
4.2. Sensor Compatibility and Data Display
The WS3900_C console can display data from various Ecowitt sensors (sold separately). Sensors whose data can be directly displayed on the WS3900_C console include:
- WS90 Compact Sensor Array
- WS80 Anemometer Sensor
- WS68 Anemometer Sensor
- WH40 Rain Gauge Sensor
- WN32 Outdoor Thermo-Hygrometer Sensor
- WN32P Indoor Thermo-Hygrometer and Barometric Pressure Sensor
- WH45/WH46 Air Quality Sensor
- WN31/WN30/WN36 Sensors (up to 8 channels)
Certain other Ecowitt sensors can be paired with the console to upload their data to the Ecowitt cloud, but their readings will not be displayed directly on the console screen. These include:
- WH57 Flash Detector Sensor
- WH41/WH43 PM2.5 Detection Sensors (up to 4 channels)
- WH55 Water Leak Detector Sensors (up to 4 channels)
- WH51/WH51L Soil Moisture Sensors (up to 8 channels)
- WN34L/WN34D/WN34S Temperature Sensors (up to 8 channels)
- WN35 Humidity Sensors (up to 8 channels)
4.3. Data Upload to Ecowitt Cloud
After successful Wi-Fi configuration, the WS3900_C console will automatically upload collected weather data to the Ecowitt cloud server. This allows you to monitor your weather station's data from anywhere using the Ecowitt app or weblloc.
5. Manteniment
5.1. Substitució de la bateria
- WS69 Outdoor Sensor: Replace the two AA batteries when the low battery indicator appears on the console. Ensure the solar panel is clean to maximize charging efficiency.
- WS3900_C Indoor Console: If using battery power, replace the three AA batteries when the low battery indicator appears. If using the DC adapter, ensure a stable power supply.
5.2. Neteja
- Sensor exterior: Periodically clean the rain gauge funnel, wind cups, and solar panel to ensure accurate readings. Use a soft, damp tela. Eviteu els netejadors abrasius.
- Indoor Console: Netegeu la pantalla i casinamb un drap suau i sec.
6. Solució De Problemes
6.1. Problemes comuns
- No Data Displayed:
- Check if both the outdoor sensor and indoor console have fresh batteries or are properly powered.
- Ensure the outdoor sensor is within the 100m (328 ft) wireless transmission range of the indoor console.
- Verify there are no significant obstructions (thick walls, large metal objects) between the sensor and console.
- Lectures incorrectes:
- Vent: Ensure the wind cups and wind vane rotate freely and are not obstructed.
- Pluja: Check the rain gauge funnel for debris.
- Temperatura/humitat: Ensure sensors are not exposed to direct sunlight or heat sources that could skew readings.
- Problemes de connexió Wi-Fi:
- Confirma que la teva xarxa Wi-Fi sigui de 2.4 GHz.
- Re-attempt the Wi-Fi configuration process using the Ecowitt app or web interfície.
- Assegureu-vos que la consola estigui dins de l'abast del vostre encaminador Wi-Fi.
For further assistance, please refer to the comprehensive online resources or contact Ecowitt customer support.
7. Especificacions tècniques
| Característica | Especificació |
|---|---|
| Número de model | WS3-9-00AE |
| Dimensions del paquet | 44.6 x 26.5 x 16.7 cm; 1.96 quilograms |
| Fabricant | ECOWITT |
| Font d'alimentació (sensor exterior) | Solar powered (with 2x AA battery backup, not included) |
| Font d'alimentació (consola interior) | DC 5V 1A or 3x AA batteries (not included) |
| Tecnologia de connectivitat | Wi-Fi (2.4 GHz) |
| Característiques especials | Multi-function WS69 wireless outdoor sensor, IoT-supported console, integrated indoor temperature/humidity and barometric pressure sensor, Wi-Fi connectivity, IoT gateway for Ecowitt devices. |
| Material | Plàstic |
| Color | Negre |
| Components inclosos | WS69 Outdoor Sensor, WS3900_C Indoor Console |
| Precisió de la temperatura | ±1 °C |
| Interval de transmissió sense fil | Fins a 100 metres (328 peus) |
| Interval de detecció | 16 segons |
8. Garantia i Suport
For information regarding product warranty, please refer to the documentation included with your purchase or visit the official Ecowitt website. For technical support, frequently asked questions, and additional resources, please visit the Ecowitt Brand Store or contact Ecowitt customer service directly.





