1. Introduction
The WENZHI BHT-009 Matter Smart Heating Thermostat is designed to provide intelligent temperature control for various heating systems. This versatile device is compatible with electric underfloor heating, water heating, and water/gas boiler systems, making it suitable for commercial, industrial, civil, and domestic properties. It integrates seamlessly with smart home ecosystems like Tuya Smart Life, Amazon Alexa, Google Home, and Apple HomeKit, offering multiple control options including touch buttons, a rotating dial, smartphone app, and voice commands.

Figure 1: WENZHI BHT-009 Matter Smart Heating Thermostat (Black and White models)
2. Contenu du colis
Veuillez vérifier que le colis contient les éléments suivants :
- Thermostat : 1 pièce
- Vis : 2 pièces
- Guide de l'utilisateur : 1 pièce
- QC Passed Certificate: 1 pc
- Floor Sensor: 1 pc (Optional, included only with electric floor heating models)
3. Spécifications techniques
| Fonctionnalité | Spécification |
|---|---|
| Numéro de modèle | BHT-009 Matter |
| Voltage | 220V |
| Charge actuelle | 5A (Chauffage de l'eau, chaudière eau/gaz), 16A (Chauffage électrique) |
| Capteur | NTC3950, 10K |
| Précision | ±1°C |
| Définir la plage de température | 5-35°C |
| Plage de température ambiante | 5-70°C |
| Afficher la plage de température | 5 ~ 70°C |
| Température ambiante | 0 ~ 45 ° C |
| Humidité ambiante | 5 ~ 95% RH (sans condensation) |
| Température de stockage | -5~ 45°C |
| Consommation d'énergie | < 1.5 W |
| Erreur de synchronisation | < 1% |
| Matériau de la coque | PC + ABS (ignifugé) |
| Boîte d'installation | 86 x 86mm Square or European 60mm Round Box |
| Bornes de fil | Fil de 2 x 1.5 mm² ou 1 x 2.5 mm² |
| Boutons | Knob + Capacitive Touch Buttons |
| Certification | CE, RoHS |
| Origine | Chine continentale |

Figure 2 : Dimensions du thermostat
4. Installation
4.1 Précautions de sécurité
CAUTION: Electrical Shock or Equipment Damage Hazard. Disconnect power supply before installation to prevent electric shock or short circuits.
4.2 Schémas de câblage
The BHT-009 Matter thermostat comes in three main models, each designed for a specific heating system. Ensure you use the correct wiring diagram for your model (GA, GB, or GC).

Figure 3: Wiring Diagrams for GA (Water Heating), GB (Electric Floor Heating), and GC (Gas Boiler)
- GA (Chauffage de l'eau) : Connects to water heating systems.
- GB (Electric Floor Heating): Connects to electric floor heating systems.
- GC (Gas Boiler): Connects to gas boiler systems.
Refer to the specific connections shown in the diagram. The thermostat requires an AC95-240V power supply. Use wires of 2 x 1.5 mm² or 1 x 2.5 mm² for terminals.

Figure 4 : Systèmes de chauffage compatibles
4.3 Montage
The thermostat is designed to fit into a standard 86 x 86mm square or European 60mm round installation box. Secure the thermostat to the wall box using the provided screws after completing the wiring.
5. Initial Setup and Smart Home Integration
5.1 Appairage de l'application (Tuya Smart Life)
To connect your thermostat to the Tuya Smart Life app:
- Assurez-vous que votre réseau Wi-Fi domestique fonctionne sur la fréquence 2.4 GHz.
- Téléchargez l'application « Smart Life » depuis la boutique d'applications de votre smartphone.
- Ouvrez l'application et suivez les instructions à l'écran pour ajouter un nouvel appareil.
- Scan the QR code located on the back of the thermostat or use the app's Bluetooth pairing function to discover the device.
- Follow the prompts in the app to complete the connection to your Wi-Fi network.

Figure 5: Scanning QR code for Smart Life App Pairing
5.2 Matter Protocol Integration (Alexa, Google Home, HomeKit)
The BHT-009 Matter thermostat supports direct connection via app scan to Matter-compatible smart home ecosystems, eliminating the need for a separate gateway.
- For Amazon Alexa and Google Home: Once paired with the Smart Life app, enable the "Smart Life" skill/service in your Alexa or Google Home app and link your accounts. The thermostat should then appear as a controllable device.
- Pour Apple HomeKit : The thermostat directly integrates with Apple HomeKit.
- Scan the HomeKit setup code (usually found on the device or packaging) using the Apple Home app.
- Note: HomeKit requires a HomePod, HomePod mini, or Apple TV to act as a home hub for successful scanning and adding of Matter accessories.

Figure 6: Direct Connect via App Scan

Figure 7: Apple HomeKit Hub Requirements
6. Fonctionnement
6.1 Affichage et commandes du thermostat
The thermostat features a clear digital display and intuitive controls:

Figure 8: Thermostat Display and Button Functions
- Indicateurs d'affichage : Weather, Room Temperature, Set Temperature, Underfloor Temperature (if applicable), Period, Heating On/Programmable/Manual Mode, Lock, Energy Saving, Wi-Fi (blinks when connected), Time, Weekday.
- Boutons:
- Mode: Cycle through operating modes (e.g., manual, programmable).
- Marche/Arrêt : Allumez ou éteignez le thermostat.
- Horloge: Adjust time and schedule settings.
- Cadran rotatif : Used for adjusting temperature settings and navigating menus.
Méthodes de contrôle 6.2
You can control your thermostat using multiple methods:
- Contrôle manuel: Directly adjust temperature using the rotating dial and touch buttons on the thermostat.
- Application pour smartphone : Use the Tuya Smart Life app to remotely control temperature, set schedules, and manage settings from anywhere.
- Contrôle vocal : Integrate with Amazon Alexa, Google Home, or Apple HomeKit for convenient voice commands.

Figure 9: Multiple Temperature Control Methods

Figure 10 : Principales caractéristiquesview
6.3 fonctionnalités avancées
- Mémoire hors tension : Settings are saved even during power outages, ensuring your preferences are retained.
- Contrôle de groupe : Manage multiple thermostats simultaneously through the app for zoned heating.
- Family Group Sharing: Share control of the thermostat with family members via the app.
7. Entretien
The WENZHI BHT-009 Matter thermostat requires minimal maintenance.
- Nettoyage: Essuyez l'écran et casinNettoyez avec un chiffon doux et sec. N’utilisez pas de nettoyants abrasifs, de solvants ni de produits chimiques en aérosol, car ils pourraient endommager la surface.
- Mises à jour logicielles : Ensure your Smart Life app is up-to-date to receive the latest features and security enhancements for your thermostat.
- Conditions environnementales : Keep the thermostat within the specified ambient temperature (0~45°C) and humidity (5~95% RH non-condensing) ranges for optimal performance.
8. Dépannage
Si vous rencontrez des problèmes avec votre thermostat, consultez les solutions courantes suivantes :
| Problème | Cause possible | Solution |
|---|---|---|
| Le thermostat ne s'allume pas. | Pas d'alimentation électrique ; câblage incorrect. | Check the main power supply to the thermostat. Verify wiring connections according to the installation diagrams. |
| Wi-Fi not connecting or blinking | Mot de passe Wi-Fi incorrect ; réseau 5 GHz ; trop éloigné du routeur. | Ensure you are using a 2.4GHz Wi-Fi network. Re-enter the Wi-Fi password in the app. Move the thermostat closer to the router or consider a Wi-Fi extender. |
| Lecture de température imprécise | Sensor issue; thermostat placed near heat source/draft. | Ensure the thermostat is not exposed to direct sunlight, drafts, or other heat sources. If using a floor sensor, check its connection. |
| Cannot control via voice assistant (Alexa/Google Home/HomeKit) | App not linked; Matter hub not set up (for HomeKit). | Verify that the Smart Life app is correctly linked to your voice assistant account. For HomeKit, ensure you have a HomePod, HomePod mini, or Apple TV set up as a home hub. |
9. Conseils d'utilisation
- Model Selection for Heating Systems: Lors de l'achatasing, ensure you select the correct model for your heating system:
- GA model: For Water Heating systems.
- GB model: For Electric Floor Heating systems.
- GC model: For Gas Boiler systems.
- Emplacement optimal : Install the thermostat on an interior wall, away from direct sunlight, windows, or heat-emitting appliances, to ensure accurate temperature readings.
- Tirez parti des fonctionnalités intelligentes : Utilize the scheduling features in the Smart Life app to automate your heating and save energy. Explore group control for managing multiple thermostats efficiently.
10. Garantie et assistance
For warranty information, technical support, or service inquiries, please refer to the contact details provided by your retailer or visit the official WENZHI webConsultez le site. Conservez votre reçu d'achat comme preuve d'achat.





