Introduction
This manual provides comprehensive instructions for the setup, operation, and maintenance of your AcuRite Weather Station with Colour Display. This device is designed to provide accurate indoor and outdoor temperature and humidity readings, along with a personalized 12-24 hour weather forecast based on data collected from its outdoor sensor.

Image: The AcuRite Weather Station in its packaging, highlighting the main display unit and the wireless outdoor sensor.
What's in the Box
Verify that all components listed below are present in your package:
- Colour Display Unit
- Wireless Outdoor Sensor
- Power Adapter for Display Unit
- Mounting Hardware for Outdoor Sensor
- Instruction Manual (this document)
- 2 AA Batteries (for outdoor sensor)

Image: Rear view of the product packaging, illustrating the various features and included components of the weather station system.
Setup Guide
1. Powering the Display Unit
- Insert 3 AA alkaline batteries (not included for display unit) into the battery compartment on the back of the display unit. Ensure correct polarity (+/-).
- Plug the power adapter into a standard electrical outlet and then into the power jack on the back of the display unit. The display will illuminate.
2. Installing the Outdoor Sensor
- Remove the battery compartment cover on the back of the outdoor sensor.
- Insert the 2 AA batteries (included) into the battery compartment. Ensure correct polarity (+/-).
- Close the battery compartment cover securely.
- Mount the outdoor sensor in a location that is out of direct sunlight and away from heat sources, such as exhaust vents or windows. An ideal location is under an eave or on a north-facing wall. Ensure it is within 330 feet (100 meters) of the display unit.

Image: The compact wireless outdoor sensor, designed for easy placement in an outdoor environment.
3. Initial Synchronization
Once both the display unit and outdoor sensor are powered, they will automatically attempt to synchronize. This may take a few minutes. The outdoor temperature and humidity readings will appear on the display once a connection is established.
Operating Instructions
Display Overview
The colour display unit presents various environmental data points. Familiarize yourself with the different sections:
- Indoor Temperature & Humidity: Current readings for the environment around the display unit.
- Outdoor Temperature & Humidity: Current readings transmitted from the wireless outdoor sensor.
- 12-24 Hour Weather Forecast: An icon-based forecast predicting conditions for the next 12 to 24 hours.
- Moon Phase: Displays the current phase of the moon.
- Barometric Pressure: Shows the current atmospheric pressure and its trend.
- Time & Date: Current time and calendar date.

Image: A detailed view of the weather station's vibrant color display, showcasing temperature, humidity, forecast, and time.
Setting Time and Date
Press the 'SET' button (usually located on the back or side of the unit) to enter setup mode. Use the 'UP' and 'DOWN' arrows to adjust values, and 'SET' to confirm and move to the next setting. Settings typically include time zone, daylight saving time, hour, minute, month, day, and year.
Understanding Weather Forecast
The weather station utilizes a unique self-calibrating forecasting system that analyzes changes in barometric pressure over a 14-day period to generate a personalized forecast for your exact location. This forecast is represented by various icons (e.g., sunny, partly cloudy, rainy, snowy).
Programmable Weather Alarms
Your weather station features programmable alarms for specific weather conditions, such as high/low temperature or humidity. Refer to the detailed instructions in the full manual for setting and managing these alarms to receive alerts when conditions exceed your set parameters.
Maintenance
Cleaning the Display Unit
Wipe the display and casing with a soft, damp cloth. Do not use abrasive cleaners or chemicals that may damage the surfaces.
Battery Replacement
Replace batteries in the outdoor sensor approximately every 12-24 months, or when the low battery indicator appears on the display. For the display unit, the batteries serve as a backup in case of power outage; replace them annually to ensure continuous backup functionality.
Sensor Placement Tips
For optimal accuracy, ensure the outdoor sensor is placed in a shaded area, protected from direct precipitation, and away from heat-emitting devices. This helps prevent inaccurate temperature readings due to solar radiation or artificial heat sources.
Troubleshooting
| Issue | Solution |
|---|---|
| No outdoor data displayed | Ensure batteries are correctly installed in the outdoor sensor. Bring the sensor closer to the display unit. Press the 'RESET' button on both units. |
| Inaccurate temperature/humidity | Verify sensor placement is away from direct sunlight, heat sources, or reflective surfaces. Allow 14 days for the self-calibrating forecast to learn your environment. |
| Display not working | Check power adapter connection. Ensure batteries are fresh and correctly inserted. Perform a full reset by removing all power sources for 1 minute. |
Product Specifications
- Model Number: 4409999
- Power Source (Display): AC Power Adapter (included), 3 AA Batteries (backup, not included)
- Power Source (Sensor): 2 AA Batteries (included)
- Connectivity Technology: 433 MHz Wireless
- Outdoor Temperature Range: -40°F to 158°F (-40°C to 70°C)
- Indoor Temperature Range: 32°F to 122°F (0°C to 50°C)
- Humidity Range: 1% to 99% RH
- Wireless Range: 330 feet (100 meters)
- Material: Durable Plastic
- Color: Black
Warranty and Support
AcuRite products are designed with quality and durability in mind. For specific warranty details and terms, please refer to the warranty card included with your product or visit the official AcuRite website. Should you require technical assistance or have questions regarding your weather station, please contact AcuRite Customer Support through their official channels.
For the most up-to-date support information, including FAQs and contact methods, please visit www.acurite.com/support.







