Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of the Generic FJ3390A Professional Multifunctional Weather Station. This device is designed to provide comprehensive weather data, including indoor and outdoor temperature, humidity, wind speed and direction, rainfall, and atmospheric pressure. It also features a weather forecast function, time display, and alarm capabilities. Please read this manual thoroughly before using the product to ensure correct installation and optimal performance.
Key features include:
- Time and date display with perpetual calendar up to 2099.
- Multi-language selection (German, French, Spanish, Dutch, Danish, Russian).
- Two daily alarms with automatic snooze function (adjustable from 5 to 60 minutes).
- Warning functions for temperature, humidity, wind speed, and rain limits.
- Display of somatosensory temperature, wind chill index, heat index, and dew point temperature.
Package Contents
Before proceeding with the installation, please verify that all components listed below are present in your package:
- 1x Weather Station Main Unit
- 1x USB Power Cable
- 1x Outdoor Sensor (for wind speed, wind direction, rain, temperature, and humidity)
- 1x User Manual (EN/DE/FR/IT/ES)
- 1x Installation Kit

Figure 1: Weather station main unit and multi-combination wireless remote sensor with dimensions. The main unit measures 20.5 cm x 13 cm x 3 cm. The sensor measures 38 cm x 30 cm x 9 cm.
Setup
1. Outdoor Sensor Assembly and Placement
The outdoor sensor is a multi-combination unit that measures wind speed, wind direction, rainfall, temperature, and humidity.

Figure 2: Components of the outdoor sensor. It includes a rain funnel, wind speed cups, a bubble level for accurate installation, a solar panel, a wind direction vane, a temperature and humidity induction box, and an installation base.
- Install Batteries: The outdoor sensor requires 3xAA batteries (not included). Open the battery compartment on the sensor unit and insert the batteries, observing correct polarity.
- Assemble Components: Attach the wind speed cups, wind direction vane, and rain funnel to their respective positions on the sensor unit.
- Mounting: Choose an open location for the outdoor sensor, free from obstructions that could affect wind or rain measurements. Use the provided installation kit to securely mount the sensor. Ensure the sensor is level using the integrated bubble level for accurate readings.
- Solar Panel: Position the solar panel to receive maximum sunlight for optimal battery charging and extended operation.
2. Main Unit Power and Initial Configuration
- Power On: Connect the main weather station unit to a power source using the provided USB power cable.
- Sensor Connection: The main unit will automatically attempt to connect with the outdoor sensor. Ensure the sensor is within range and powered on.
- Time and Date: Once powered, set the current time, date, and year. Refer to the detailed instructions in the included multi-language manual for specific button functions.
- Language Selection: Select your preferred display language from the available options (German, French, Spanish, Dutch, Danish, Russian).
- Unit Settings: Configure desired units for temperature (℃/℉), wind speed (km/h, mph, m/s, knots, Beaufort), rainfall (mm/inch), and atmospheric pressure (hPa, inHg, mmHg).

Figure 3: Rear view of the main weather station unit, illustrating the integrated stand for desktop placement and keyholes for wall mounting.

Figure 4: Example of weather station setup, showing the main unit placed indoors and the outdoor sensor installed in a garden, demonstrating wireless connectivity. The main unit can be placed on a stand or hung on a wall.
Operating Instructions
1. Display Overview
The main unit features a color LCD display that presents various weather parameters and time information.

Figure 5: Main display of the weather station, showing professional multi-functional data including weather forecast, rain, wind speed, wind direction, outdoor temperature and humidity, indoor temperature and humidity, and current time.

Figure 6: Detailed display features including 12/24 hour time, date, week display, weather forecast, frost warning, temperature, humidity, atmospheric pressure, dual daily alarms, snooze function, background lighting, USB charging indicator, and wireless sensor connectivity.
- Weather Forecast: Icons indicate predicted weather conditions (sunny, cloudy, rainy, etc.).
- Rainfall: Displays current rainfall data.
- Wind Speed & Direction: Shows current wind speed and direction.
- Outdoor Data: Temperature and humidity readings from the outdoor sensor.
- Indoor Data: Temperature and humidity readings from the main unit.
- Time & Date: Current time and date.
- Atmospheric Pressure: Current barometric pressure.
2. Alarm and Snooze Functions
The weather station includes two daily alarms.
- Setting Alarms: Use the dedicated buttons (refer to the included manual for specific button labels) to set Alarm 1 and Alarm 2. You can configure the alarm time, duration, and snooze interval.
- Snooze Function: When an alarm sounds, press the snooze button to temporarily silence it. The snooze duration can be set from 5 to 60 minutes.
3. Warning Functions
The device can alert you to specific weather conditions.
- Temperature/Humidity Limits: Set upper and lower thresholds for indoor and outdoor temperature and humidity. An alarm will sound if readings exceed these limits.
- Wind Speed Limit: Configure a maximum wind speed. An alert will activate if the wind speed surpasses this value.
- Rainfall Limit: Set a maximum rainfall amount. An alert will sound if accumulated rainfall exceeds this limit.
4. Advanced Meteorological Data
The weather station calculates and displays additional environmental indices:
- Somatosensory Temperature: Perceived temperature based on environmental factors.
- Wind Chill Index: How cold it feels due to the combined effect of temperature and wind.
- Heat Index: How hot it feels when relative humidity is combined with air temperature.
- Dew Point Temperature: The temperature at which air becomes saturated with water vapor and dew begins to form.
Maintenance
- Cleaning: Regularly wipe the main unit and outdoor sensor with a soft, damp cloth. Avoid abrasive cleaners or solvents. Ensure the rain funnel and wind sensors are free from debris.
- Battery Replacement: Replace the 3xAA batteries in the outdoor sensor annually or when the low battery indicator appears on the main unit. Use high-quality alkaline batteries for best performance.
- Sensor Placement: Periodically check the outdoor sensor's mounting to ensure it remains secure and level. Clear any vegetation or new obstructions that may have grown around it.
- Rain Gauge Calibration: If rainfall readings appear inaccurate, ensure the rain funnel is clear and the tipping bucket mechanism moves freely. Refer to the full manual for potential calibration steps.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display on main unit. | Power cable disconnected or faulty. | Ensure USB power cable is securely connected to a working power source. |
| Outdoor sensor data not displayed or inaccurate. |
|
|
| Incorrect time or date. | Time/date not set correctly after power loss or initial setup. | Manually adjust the time and date settings using the control buttons. |
| Rainfall readings are incorrect. | Rain funnel is blocked or tipping bucket mechanism is stuck. | Clear any debris from the rain funnel and ensure the tipping bucket moves freely. |
| Wind speed/direction readings are incorrect. | Wind cups or vane are obstructed or stuck. Sensor is not level. | Ensure wind cups and vane rotate freely. Check the sensor's level using the bubble level. |
Specifications
| Feature | Specification |
|---|---|
| Indoor Temperature Range | 0°C to +50°C (32°F to 122°F) |
| Indoor Humidity Range | 20% to 95% RH |
| Outdoor Temperature Range | -40°C to +70°C (-40°F to 158°F) |
| Outdoor Humidity Range | 20% to 95% RH |
| Temperature Accuracy | ±1°C |
| Atmospheric Pressure Range | 600 to 1100 hPa (17.72 to 32.48 inHg, 450 to 825.1 mmHg) |
| Wind Speed Detection | 0 to 180 km/h |
| Wind Direction Detection | 0 to 359 degrees |
| Rainfall Detection | 0 to 9999 mm (0 to 394 inches) |
| Host Dimensions | 20.5 x 13 x 3 cm |
| Sensor Dimensions | 38 x 30 x 9 cm |
| Power Source (Main Unit) | USB Powered |
| Power Source (Outdoor Sensor) | 3x AA Batteries (not included) |
| Display Type | LCD Color Display |
| Connectivity Technology | Wireless (Sensor), USB (Main Unit) |
| Material | ABS |
| Color | Black |
Warranty and Support
For detailed warranty information, please refer to the documentation provided with your purchase or contact the retailer directly.
If you encounter any issues or require technical assistance, please consult the comprehensive user manual included in your package for specific troubleshooting steps and contact information for customer support.
