Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of your Geevon Wireless Indoor Outdoor Thermometer & Hygrometer. This device is designed to accurately monitor indoor and outdoor temperature and humidity, offering essential environmental data at a glance. Please read this manual thoroughly before use to ensure optimal performance and longevity of your device.
Caractéristiques du produit
- Multi-Channel Wireless Monitoring: Displays indoor temperature & humidity plus remote outdoor sensor data up to 200 ft (60 m), with support for switching between 3 channels.
- Température et humidité précises : Provides precise readings: ±0.5 °C (±0.9 °F) in normal room temperatures and ±1 °C in extreme cold or heat. Indoor range: –10 to 50 °C (14–122 °F). Outdoor range: –40 to 70 °C (–40–158 °F).
- Grand écran LCD rétroéclairé : A 3.78-inch screen shows time (12/24H), date, indoor/outdoor temperature, humidity, and trend arrows. Press any button to activate a 10-second backlight for easy night viewing.
- Built-In Alarm Clock & Snooze: Features a 12/24H selectable clock format with a wake-up alarm and a 5-minute snooze function. A touch-activated button provides light and snooze functions.
- Battery Operated & Flexible Placement: Uses 2 AA batteries for the main unit and 2 AA for the sensor (not included). The compact design includes a kickstand, magnetic backing, and wall mount for versatile placement.

Figure 1: Main unit display with key features labeled, including time, date, indoor/outdoor temperature and humidity, and trend indicators.

Figure 2: Display showing temperature and humidity trends, along with buttons to view maximum and minimum records.
Qu'y a-t-il dans la boîte
Lors du déballage, veuillez vérifier que tous les articles sont présents :
- 1 x Unité d'affichage principale
- 1 x TX33 Outdoor Sensor
- 1 x Manuel d'instructions
Installation
1. Installation de la batterie
Unité principale : Ouvrez le compartiment à piles situé à l'arrière de l'appareil. Insérez 2 piles AA (non fournies) en respectant la polarité (+/-). Refermez le compartiment.
Capteur extérieur : Open the battery compartment on the back of the outdoor sensor. Insert 2 AA batteries (not included), ensuring correct polarity (+/-). Close the compartment.
2. Appariement initial
After installing batteries in both units, the main unit will automatically search for the outdoor sensor. Place the sensor within range of the main unit. The outdoor temperature and humidity should appear on the main display within a few minutes. If not, press the 'CH' button on the main unit to manually search for the sensor.
3. Réglage de l'heure et de la date
- In normal display mode, press and hold the 'SET' button to enter time setting mode.
- The hour digit will flash. Use the 'UP' or 'DOWN' buttons to adjust the hour.
- Press 'SET' to confirm and move to the next setting (minutes, year, month, day).
- Repeat the adjustment process for each setting.
- Appuyez de nouveau sur « SET » pour quitter le mode de réglage.
4. Sélection de l'unité de température (°C/°F)
Press the 'C/F' button on the back of the main unit to switch between Celsius (°C) and Fahrenheit (°F).

Figure 3: Illustration of the one-touch button for switching between Celsius and Fahrenheit temperature units.
5. Directives relatives au placement des capteurs
- Place the outdoor sensor in a shaded, dry location away from direct sunlight and rain for accurate readings.
- The wireless range between the main unit and sensor is up to 200 feet (60 meters) in open air. Walls, metal objects, and other obstructions may reduce the effective range.
- Avoid placing the sensor near large metal objects, electrical appliances, or other sources of interference.

Figure 4 : Examples of suitable placement for the main unit and remote sensor in different environments.
Opération
1. Lecture de l'affichage
The large LCD displays the current time, date, indoor temperature, indoor humidity, outdoor temperature, and outdoor humidity. Trend arrows indicate whether temperature and humidity are rising, falling, or stable.
2. Activation du rétroéclairage
Press the 'SNZ/LIGHT' button on the top of the main unit to activate the backlight for 10 seconds, improving visibility in low-light conditions.

Figure 5: The display with its soft 10-second backlight activated, ideal for night viewing.
3. Using the Alarm and Snooze Function
- Réglage de l'alarme : In normal display mode, press the 'ALARM' button (bell icon) on the back to view the alarm time. Press and hold 'ALARM' to enter alarm setting mode. Use 'UP' or 'DOWN' to adjust the hour and minutes, pressing 'ALARM' to confirm each step.
- Activation/Désactivation de l'alarme : Press the 'ALARM' button briefly to toggle the alarm on or off. An alarm icon will appear/disappear on the display.
- Fonction de répétition: When the alarm sounds, press the 'SNZ/LIGHT' button on top to activate the 5-minute snooze. The alarm will sound again after 5 minutes. To stop the alarm, press any other button on the back.

Figure 6: The main unit displaying the time, indicating its alarm clock functionality with a snooze button.
4. Switching Channels
If you have multiple outdoor sensors (up to 3 supported), press the 'CH' button on the back of the main unit to cycle through the sensor channels (CH1, CH2, CH3) or to display all channels in rotation.

Figure 7: Diagram illustrating the capability of the thermometer to monitor up to three different locations using additional sensors.
5. ViewEnregistrements Max/Min
Press the 'MAX/MIN' button on the back to view the maximum and minimum temperature and humidity records for the last 24 hours. Press again to cycle through Max, Min, and current readings.
Options de placement
L'unité principale offre des options d'installation flexibles :
- Béquille : Utilisez le support intégré pour poser le tout sur une table.
- Support magnétique : Attach the unit to metallic surfaces like refrigerators.
- Montage mural: Utilize the hanging hole on the back for wall mounting.

Figure 8: Various placement methods for the main unit, including a base stand, magnetic back, and hanging hole.
Entretien
- Nettoyage: Essuyez l'appareil avec un chiffon doux, damp tissu. N'utilisez pas de nettoyants abrasifs et ne plongez pas dans l'eau.
- Remplacement de la batterie : Remplacez les piles de l'unité principale et du capteur lorsque le témoin de batterie faible s'affiche. Veillez à respecter la polarité.
- Stockage: Si vous devez ranger l'appareil pendant une période prolongée, retirez toutes les piles afin d'éviter les fuites. Conservez-le dans un endroit frais et sec.

Figure 9: The low battery indicator displayed on the screen, prompting battery replacement.
Dépannage
| Problème | Cause possible | Solution |
|---|---|---|
| Aucun affichage sur l'unité principale. | Les piles sont déchargées ou mal insérées. | Remplacez les piles en veillant à respecter la polarité. |
| Aucune mesure de température/humidité extérieure. | Capteur hors de portée, batterie du capteur faible ou interférences. | Move sensor closer to the main unit. Replace sensor batteries. Relocate sensor away from interference sources. Press 'CH' button to re-sync. |
| Relevés de température/humidité inexacts. | Capteur exposé à la lumière directe du soleil, à la pluie ou à des sources de chaleur. | Relocate the outdoor sensor to a shaded, dry area. Ensure proper ventilation around both units. |
| L'alarme ne sonne pas. | L'alarme n'est pas activée. | Ensure the alarm icon is visible on the display. Refer to 'Using the Alarm and Snooze Function' section. |
Caractéristiques
- Modèle: GE-256388-BK-WUS
- Marque: Geevon
- Couleur: E noir
- Plage de température intérieure : –10 to 50 °C (14–122 °F)
- Plage de température extérieure : –40 to 70 °C (–40–158 °F)
- Précision de la température : ±0.5 °C (±0.9 °F) at normal room temperatures; ±1 °C at extreme temperatures
- Humidity Measuring Accuracy: ±3% RH (@25°C, 30%RH to 80%RH)
- Portée sans fil : Jusqu'à 60 m (200 pieds) en plein air
- Alimentation (unité principale) : 2 piles AA (non incluses)
- Power Supply (Sensor): 2 piles AA (non incluses)
- Afficher: Large LCD with 10-second backlight
- Composants inclus : Main unit, TX33 outdoor sensor, Instruction Manual
Garantie et assistance
Garantie: This product comes with a 1-Year Manufacturer's Warranty. Please retain your purchase receipt for warranty claims.
Soutien: For any questions, technical assistance, or warranty inquiries, please contact Geevon customer support through the retailer's platform or the contact information provided on the product packaging.