1. Safety Information
Please read all instructions carefully before using this device. Keep this manual for future reference.
- Do not expose the main unit or outdoor sensor to excessive force, shock, dust, temperature, or humidity.
- Do not immerse the unit in water.
- Do not remove any screws or attempt to disassemble the unit.
- Do not mix old and new batteries. Do not mix alkaline, standard (carbon-zinc), or rechargeable (nickel-cadmium) batteries.
- Remove batteries if storing the unit for a long period.
- Dispose of used batteries properly according to local regulations.
- Only use the specified power adapter for the main unit.
2. Package Contents
Ensure all items are present and in good condition:
- LFF Wireless Weather Station Main Unit (1)
- Wireless Outdoor Sensor (1)
- Power Adapter (1)
- User Manual (1)
3. Product Overview
The LFF FWS077-GB Weather Station provides comprehensive indoor and outdoor environmental data with a clear, colorful display.
Figure 3.1: LFF Wireless Weather Station Main Unit. This is the central display unit for all weather data.
Figure 3.2: Colorful and Large Digital Display. The display shows outdoor temperature & humidity, weather forecast, indoor temperature & humidity, weekday/time zone, time, and date.
Figure 3.3: Main Unit and Outdoor Sensor Dimensions. Icons indicate features such as Temperature, Humidity, Trend Indicator, °C/°F Switch, Backlight, WWVB, Calendar, and Clock.
4. Setup
4.1 Powering the Main Unit
The main unit can be powered by the included AC adapter or 3 x AAA batteries (not included).
- Using AC Adapter: Plug the adapter into the DC 5V port on the back of the main unit and then into a power outlet. The backlight will remain on continuously.
- Using Batteries: Open the battery compartment on the back of the main unit and insert 3 x AAA batteries, observing polarity. The screen backlight will turn off after 10 seconds to conserve power.
Figure 4.1: Two Power Modes. The main unit can be powered by an AC adapter for continuous backlight or by 3 AAA batteries for portable use with a temporary backlight.
4.2 Powering the Outdoor Sensor
The wireless outdoor sensor requires 2 x AAA batteries (not included).
- Open the battery compartment on the back of the outdoor sensor.
- Insert 2 x AAA batteries, ensuring correct polarity (+/-).
- Close the battery compartment securely.
4.3 Initial Synchronization
Once both units are powered, they will automatically attempt to synchronize. Place the outdoor sensor within range of the main unit (up to 330ft/100m in an open area).
Figure 4.2: Wireless Transmission Range. The outdoor sensor transmits data wirelessly to the main unit up to 330 feet (100 meters) in open areas.
4.4 Atomic Clock (WWVB) Function
The weather station features a WWVB function that automatically searches for the atomic clock signal and updates the time daily at 1:00 am, 2:00 am, 3:00 am, 4:00 am, and 5:00 am.
After the RF connection is established, the weather station will automatically receive the atomic clock signal. The RCC receiving dot icon “●” will flash. During this process, the screen and backlight may darken. This is normal behavior as the station is receiving the signal; please wait patiently for it to complete.
5. Operating Instructions
5.1 Display Information
The large color display shows the following information:
- Indoor Temperature (°C/°F) & Humidity
- Outdoor Temperature (°C/°F) & Humidity
- Weather Forecast (next 6-12 hours)
- Date/Time (12H/24H)
- Alarm Clock with Snooze
- 8 Time Zones
- Dynamic Weather Icons
5.2 Weather Forecast
The weather forecast station predicts weather changes over the next 6-12 hours based on temperature and humidity data from the outdoor sensor. It displays 7 dynamic icons:
Figure 5.1: Weather Forecast Icons. These icons represent predicted weather conditions for the next 6-12 hours.
5.3 Adjustable Backlight
When powered by the AC adapter, the backlight brightness can be adjusted to 3 levels to suit different lighting conditions (day, night, indoors, outdoors).
5.4 Alarm Clock and Snooze
The weather station includes an alarm clock with a snooze function, providing an extra 5 minutes of sleep after the alarm sounds.
6. Maintenance
- Clean the display and unit casing with a soft, damp cloth. Avoid abrasive cleaners.
- Ensure the outdoor sensor is placed in a location protected from direct heavy rain and sunlight for optimal longevity and accuracy.
- Replace batteries in both units when the low battery indicator appears on the display.
7. Troubleshooting
- No outdoor temperature/humidity reading: Ensure the outdoor sensor is within range and has fresh batteries. Re-synchronize if necessary by removing and reinserting batteries in both units.
- Atomic clock not syncing: Place the main unit near a window, preferably facing east, and ensure there are no strong electronic interferences. The synchronization process can take several hours.
- Display is dim (on battery power): This is normal behavior to save power. Connect the AC adapter for continuous, adjustable backlight.
- RCC receiving dot icon “●” flashing and screen darkens: This indicates the weather station is in the process of receiving the atomic clock signal. This is normal and not a malfunction.
8. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions (Main Unit) | 8.1 x 0.9 x 5.6 inches (0.9"D x 8.1"W x 5.6"H) |
| Item Model Number | FWS077-GB |
| Batteries (Main Unit) | 3 AAA batteries required (not included) |
| Batteries (Outdoor Sensor) | 2 AAA batteries required (not included) |
| Power Source | Corded Electric (AC Adapter included) or Battery |
| Wireless Transmission Range | Up to 330ft/100m (open area) |
| Special Features | Weather Forecast, Alarm Clock, Atomic Clock, Adjustable Backlight |
| Material | Plastic |
| Color | Black |
9. Warranty and Support
For detailed warranty information and customer support, please refer to the included User Manual (PDF) or contact LFF customer service directly. Contact information can typically be found on the product packaging or in the full user manual.
