Geevon 228646
Geevon Indoor Outdoor Thermometer with 3 Remote Sensors (Model 228646)
User Manual
1. Product Overview
The Geevon Wireless Indoor Outdoor Thermometer with 3 Remote Sensors provides accurate real-time temperature and humidity readings for up to four locations. Its large LCD display shows current conditions, 24-hour Max/Min records, and trend arrows. The integrated Comfort Indicator helps you maintain optimal living conditions. This system includes one main display unit and three wireless remote sensors, offering a transmission range of up to 200 feet (60 meters).

Figure 1: Main display unit highlighting key features like temperature/humidity, comfort level, Max/Min records, temperature trends, C/F selector, temperature/humidity alert, and multi-channel display.
Package Contents:
- 1 x Main Display Unit
- 3 x Wireless Remote Sensors
- 1 x USB Cable (for main unit power, though it's battery operated)
- 1 x User Manual
2. Setup Instructions
2.1 Battery Installation
The main display unit requires 2 AA batteries, and each remote sensor requires 2 AAA batteries (not included). Ensure correct polarity when inserting batteries.
- Open the battery compartment cover on the back of the main display unit.
- Insert 2 AA batteries, observing the correct polarity (+/-).
- Replace the battery compartment cover.
- For each remote sensor, open the battery compartment cover.
- Insert 2 AAA batteries, observing the correct polarity (+/-).
- Replace the battery compartment cover.

Figure 2: Illustration of battery installation for the main unit and remote sensors.
2.2 Sensor Channel Selection
Before placing the remote sensors, assign a unique channel (1, 2, or 3) to each sensor using the switch inside its battery compartment. This allows the main unit to distinguish between the different sensor readings.
Video 1: Official Geevon video demonstrating the setup process, including battery installation and channel selection for remote sensors.
2.3 Pairing Sensors with Main Unit
Once batteries are installed and channels are set, the main unit will automatically search for and connect to the remote sensors. This process may take a few minutes. Ensure all sensors are within range during initial setup.

Figure 3: The main display unit receiving data from three remote sensors, illustrating multi-location monitoring.
2.4 Placement Guidelines
- Main Unit: Place the main unit indoors on a flat surface using its integrated stand or mount it on a wall using the hang hole. Avoid placing it near heat sources or direct sunlight.
- Remote Sensors: Position remote sensors in desired outdoor or indoor locations. For outdoor use, place sensors in a shaded, dry area, protected from direct sunlight and rain, to ensure accurate readings and prolong battery life. The maximum transmission range is 200 feet (60 meters) in open air.

Figure 4: The main unit and remote sensor showing tabletop stand and wall mount options.

Figure 5: Example of proper outdoor sensor placement, protected from direct elements.
3. Operating Instructions
3.1 Display Overview
The large LCD screen displays indoor temperature and humidity, along with readings from the three remote sensors (Channel 1, 2, 3). Each reading includes current temperature, humidity, and trend arrows.

Figure 6: Detailed view of the display, including comfort icons and trend arrows.
3.2 Temperature Unit Selection (°C/°F)
Press the "MEM/▼" button to switch between Celsius (°C) and Fahrenheit (°F) temperature units.
3.3 Max/Min Records
The device automatically records the maximum and minimum temperature and humidity values over the past 24 hours. Press the "MEM/▼" button repeatedly to cycle through current, maximum (MAX), and minimum (MIN) readings for each channel. These records update every 24 hours.
3.4 Comfort Indicator
The display features a comfort indicator icon to quickly assess indoor conditions:
- COM (Comfortable): 40% ≤ Humidity ≤ 70% & 20°C ≤ Temperature ≤ 28°C (68°F ≤ Temperature ≤ 82.4°F)
- DRY: Humidity < 40%
- WET: Humidity > 70%

Figure 7: The comfort indicator displaying "COM" for comfortable conditions.
3.5 Temperature and Humidity Alerts
You can set audible high and low alert values for temperature and humidity. When the readings exceed or fall below your preset values, an alarm will sound.
- Press the "ALERT" button to enter alert setting mode.
- Use the "CH/▲" and "MEM/▼" buttons to adjust the desired high/low temperature and humidity thresholds for each channel.
- Press "ALERT" again to confirm settings and move to the next parameter.
- Exit alert setting mode by pressing the "ALERT" button until the normal display returns.
4. Maintenance
4.1 Battery Replacement
When the battery indicator appears on the display, replace the batteries in the corresponding unit (main unit or sensor). Refer to Section 2.1 for battery installation instructions.
4.2 Cleaning
Wipe the units with a soft, damp cloth. Do not use abrasive cleaners or solvents, as these may damage the display or casing.
4.3 Environmental Considerations
While remote sensors are designed for outdoor use, prolonged exposure to extreme weather conditions (heavy rain, direct intense sunlight, extreme cold/heat) can affect performance and lifespan. For best results, place sensors in a protected location.
5. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display on main unit or sensor. | Batteries are dead or incorrectly installed. | Replace batteries with new ones, ensuring correct polarity. |
| Main unit not receiving data from a sensor. | Sensor out of range, interference, or incorrect channel setting. |
|
| Inaccurate temperature/humidity readings. | Sensor exposed to direct sunlight, rain, or heat sources. | Relocate the sensor to a shaded, protected area. Allow time for readings to stabilize. |
| Humidity reading stuck at 20% or 70%. | The device's humidity measurement range is 20%-95%. Readings outside this range may display the minimum or maximum limit. | This is normal behavior for conditions outside the specified range. |
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | 228646 |
| Indoor Temperature Range | 50°F ~ 140°F (-10°C ~ 60°C) |
| Outdoor Temperature Range | -58°F ~ 158°F (-50°C ~ 70°C) |
| Temperature Accuracy | ± 1.8°F / 1°C |
| Humidity Range | 20% - 95% |
| Humidity Accuracy | ± 5% |
| Wireless Frequency | 433 MHz |
| Transmission Range | Up to 200FT / 60M (in open air) |
| Main Unit Power | 2 x AA Batteries (not included) |
| Remote Sensor Power | 2 x AAA Batteries (not included) |
| Mounting Type | Tabletop Stand, Wall Mount |
| Item Weight | 12 ounces (total package) |

Figure 8: Dimensions of the main display unit and a remote sensor.
7. Warranty and Support
Geevon is committed to providing high-quality products and customer satisfaction.
- 1-Year Warranty: This product is covered by a 1-year warranty from the date of purchase.
- 90-Day Free Replacements: Free replacements are available within 90 days of purchase for any manufacturing defects.
- 30-Day Free Returns: You may return the product within 30 days for a full refund.
- Lifetime Technical Support: Geevon offers lifetime technical support for this product.
- Customer Service Phone: +1-8889704397

Figure 9: Summary of Geevon's warranty and customer support offerings.
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