Why has my VOKSUN 3378QX weather station sensor stopped transmitting even after replacing the batteries?

If your VOKSUN 3378QX outdoor sensor is not transmitting after a battery change and restart, please try the following troubleshooting steps: Check Signal Interference: Ensure the sensor is within the 60-meter (200 feet) range....

VOKSUN 3378QX

VOKSUN Wireless Weather Station User Manual

Model: 3378QX

Brand: VOKSUN

Introduction

Thank you for choosing the VOKSUN Wireless Weather Station. This device provides comprehensive weather information including indoor/outdoor temperature and humidity, weather forecasts, moon phases, and more. Please read this manual carefully before use to ensure proper operation and to maximize the lifespan of your device.

What's in the Box

VOKSUN Wireless Weather Station Main Unit
Outdoor Wireless Sensor
Power Adapter (DC5V)
User Manual

Contents of the VOKSUN Wireless Weather Station box including main unit, sensor, adapter, and manual.

Image: The contents of the product packaging, showing the main weather station unit, the wireless outdoor sensor, the power adapter, and the user manual.

Product Features

Multiple Data Display: Displays indoor/outdoor temperature and humidity, sunrise/sunset times, time and date, alarm and snooze, moon phase, pressure, tides, comfort and mold risk alerts, and weather forecasts.
External Sensor & 60m Wireless Transmission: Supports up to three wireless sensors simultaneously. The outdoor sensor monitors temperature and humidity and automatically synchronizes data with the main unit. Wireless transmission range up to 60 meters in open areas.
Large Color Display: Large LCD screen with vivid color display for clear readability. Multi-level backlight and highly visible typography improve visibility at a distance and at night.
Two Power Supply Modes: Supports both battery (not included) and power adapter operation. Includes a USB port for charging electronic devices.
High Precision: Integrated intelligent temperature and humidity sensors provide accurate and fast monitoring. Indoor temperature range: -9.9 °C to +50 °C; Outdoor temperature range: -40 °C to +70 °C; Humidity range: 20% to 95%.

VOKSUN Weather Station displaying various functions like temperature, humidity, calendar, weather forecast, moon phase, alarms, sunset/sunrise time, alerts, comfort index, and atmospheric pressure.

Image: An illustration highlighting the various functions of the VOKSUN Weather Station, including temperature, humidity, calendar, weather forecast, moon phase, alarms, sunset/sunrise time, alerts, comfort index, and atmospheric pressure.

Setup

1. Power Supply

The weather station can be powered by the included DC5V power adapter or by batteries (not included). The outdoor sensor requires batteries.

Main Unit: Insert 3 x AAA batteries (not included) for backup power, or connect the DC5V power adapter to the main unit and a power outlet. For continuous backlight, use the power adapter.
Outdoor Sensor: Insert 2 x AA batteries (not included) into the outdoor sensor. Ensure correct polarity.

VOKSUN Weather Station and wireless sensor showing power supply options: DC5V adapter and AA batteries.

Image: The weather station and its wireless sensor, illustrating the two power supply methods: using the DC5V adapter for the main unit and AA batteries for both the main unit (for backup) and the outdoor sensor.

2. Sensor Placement

Place the outdoor sensor in a shaded, dry location, away from direct sunlight and precipitation, to ensure accurate readings. The wireless transmission range is up to 60 meters (200 feet) in open areas. Avoid placing it near large metal objects or electrical appliances that may interfere with the signal.

Diagram showing optimal placement for the wireless outdoor sensor in different areas like a door, under an eave, or near a window, indicating a 200ft/60m wireless range and max 3 channels.

Image: A diagram illustrating suitable locations for the outdoor wireless sensor, such as near a door, under an eave, or by a window, emphasizing the 60-meter wireless range and the ability to support up to three channels for different areas.

3. Initial Synchronization

Once both the main unit and the outdoor sensor are powered on, they will automatically attempt to synchronize. The outdoor temperature and humidity readings should appear on the main unit's display within a few minutes. If not, refer to the troubleshooting section.

4. Time and Date Setting (DCF Funkuhr)

The weather station features a DCF radio-controlled clock. It will automatically synchronize with the DCF signal for accurate time and date. This process may take several minutes or hours depending on your location and signal strength. Ensure the unit is placed away from electronic devices that might cause interference.

Map showing DCF signal coverage in Europe with the weather station and clock icons indicating automatic time adjustment.

Image: A map of Europe indicating the coverage area of the DCF radio signal, with the weather station shown to automatically adjust its time based on this signal, including daylight saving time changes.

If manual setting is required, consult the detailed instructions in the included user manual for specific button functions.

Operating Instructions

1. Display Overview

The large color display shows various information simultaneously:

Outdoor Temperature & Humidity: Located on the left side.
Indoor Temperature & Humidity: Located on the right side.
Weather Forecast: Icons indicating sunny, partly cloudy, cloudy, rainy, stormy, snowy conditions.
Time & Date: Centrally located.
Sunrise/Sunset Times: Displays calculated sunrise and sunset times.
Moon Phase: Shows the current moon phase.
Atmospheric Pressure: Barometric pressure readings and trend.
Comfort Index & Mold Risk: Indicates indoor comfort levels and potential mold risk based on humidity.

VOKSUN Wireless Weather Station with a large color display showing indoor and outdoor temperature and humidity, weather forecast, time, date, moon phase, sunrise/sunset times, and comfort index.

Image: The main display unit of the VOKSUN Wireless Weather Station, showcasing its comprehensive color display with various data points including indoor and outdoor temperature and humidity, weather forecast icons, current time and date, moon phase, sunrise and sunset times, and comfort index.

2. Weather Forecast

The weather station provides a 12-hour weather forecast based on atmospheric pressure changes. The forecast icons represent:

Sunny
Slightly Cloudy
Cloudy
Rainy
Stormy
Snowy

Weather forecast icons on the VOKSUN Weather Station display, showing Sunny, Slightly Cloudy, Cloudy, Rainy, Stormy, and Snowy conditions, along with 8 moon phases.

Image: A visual representation of the six weather forecast levels (Sunny, Slightly Cloudy, Cloudy, Rainy, Stormy, Snowy) and eight moon phases as displayed on the weather station.

3. Alarm and Snooze Function

The weather station includes an alarm clock with a snooze function. Refer to the full user manual for detailed instructions on setting alarms and activating snooze.

Image showing a person waking up with the weather station on a bedside table, illustrating the two alarm clock function.

Image: A visual demonstrating the dual alarm clock feature, with the weather station placed on a bedside table and a person waking up.

4. Backlight Adjustment

The display backlight can be adjusted to multiple levels for optimal viewing in different lighting conditions. When operating on batteries only, the backlight will typically turn off after a short period to conserve power. Touch a button to temporarily illuminate the display. When powered by the adapter, the backlight can remain continuously on.

Maintenance

Clean the display and unit with a soft, dry cloth. Do not use abrasive cleaners or solvents.
Avoid exposing the unit to extreme temperatures, direct sunlight, or excessive moisture.
If not in use for an extended period, remove batteries from both the main unit and the outdoor sensor to prevent leakage.
Ensure the outdoor sensor is kept clean and free from debris that might obstruct its sensors.

Troubleshooting

Problem	Possible Cause	Solution
No outdoor temperature/humidity reading.	Sensor out of range, low sensor battery, interference, or sensor not paired.	Move sensor closer to the main unit. Replace sensor batteries. Relocate unit/sensor away from interference sources. Re-pair the sensor (refer to full manual for pairing steps).
Inaccurate readings.	Sensor exposed to direct sunlight/rain, poor ventilation, or unit placed near heat sources.	Ensure outdoor sensor is in a shaded, well-ventilated area. Ensure indoor unit is not near windows, vents, or appliances that generate heat/cold.
Display is dim or blank.	Low main unit battery, power adapter disconnected, or backlight setting.	Replace main unit batteries. Ensure power adapter is securely connected. Tap any button to activate backlight if on battery power.
Time/Date incorrect.	DCF signal interference or manual setting required.	Relocate unit to an area with better DCF signal reception. Manually set time and date if automatic synchronization fails.

Specifications

Model Number	3378QX
Indoor Temperature Range	-9.9 °C to +50 °C
Outdoor Temperature Range	-40 °C to +70 °C
Humidity Range	20% to 95% RH
Temperature Accuracy	+/-1 °C
Wireless Transmission Range	Up to 60 meters (200 feet) in open area
Power Supply (Main Unit)	DC5V Power Adapter (included), 3 x AAA Batteries (not included)
Power Supply (Outdoor Sensor)	2 x AA Batteries (not included)
Dimensions (Main Unit)	Approx. 22.6 x 15.3 x 7.7 cm
Weight	610 g

Warranty and Support

For warranty information and technical support, please refer to the contact details provided with your purchase or visit the official VOKSUN website. Keep your purchase receipt as proof of purchase.

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