Quick Summary
HTW-WF10-3A3 is a WiFi water heating thermostat for water heating systems. It uses NC, NO and COM terminals for valve control. The thermostat supports Tuya WiFi connection and remote operation. This WiFi water heating thermostat ensures stable and flexible heating control.
This page explains how the WiFi water heating thermostat works in projects. It includes control logic, wiring reference and key technical parameters. Model structure and project customisation options are also explained. Typical installation questions and practical guidance are provided.

Key Features
(We explain the core control functions and their practical value.)
01. Valve Control with Relay Output
The WiFi water heating thermostat uses NC, NO and COM terminals. It controls water valves based on temperature demand. This ensures stable heating switching in room-level applications.
02. WiFi Remote Control via Tuya App
The thermostat connects to the Tuya platform through WiFi. Users can adjust temperature settings remotely. This improves flexibility and convenience in daily operation. We also have realted standalone model HTW-WF10-3A1.
03. Multi-language Interface Support
The system supports multiple languages in the mobile application. This allows easier use across international projects. It helps improve usability for different users and environments.
Product Design and Display
(Shows the product’s dimensions and the interface layout.)

Technical Specifications
(This section lists the key parameters for reference and project confirmation.)
| Parameter | Value |
|---|---|
| Power Supply | 95~240Vac |
| Frequency | 50/60Hz |
| Accuracy | ±0.5°C or ±1°F |
| Sensor | NTC3950, 10K |
| Setpoint Range | 5~35°C |
| Display Range | 5~99°C |
| Installation | EU or Standard Electric Box Housing |
| Material | PC + ABS (Fireproof), IP20 |
Wiring Diagram
(This section provides the wiring reference diagram for correct installation.)

Model Code Guide
(We explain what configuration the model code refers to.)
| Heating series | xx stands for |
|---|---|
| 3A | Water Heating, with NC+NO+COM output terminals |
| 3 | 3 = Wi-Fi |
| Example | HTW-WF11-xx: if xx = 16A3, it stands for electric floor heating with external sensor support and Wi-Fi function. Most sub-models are ready-made. Kindly contact us to confirm availability. |
Project Fit & Customization
(This section explains where the product can be used, its limits, and OEM/ODM options.)
This thermostat is not suitable for electric floor heating systems. It does not support high-load electrical output for direct heating control. Projects using electric heating cables should select 16A thermostat models.
It is not designed for industrial BMS integration systems. Protocols such as Modbus or BACnet are not supported. Central control projects should select communication-enabled thermostats.
Despite these limits mentioned above, some functional adjustments may be discussed. WiFi behaviour or control logic can be modified based on project needs. All changes depend on technical feasibility and production conditions. OEM customisation such as logo printing and packaging is supported.
Certificates and Compliance


Frequently Asked Questions
Can this WiFi water heating thermostat control electric heating systems?
No. It is designed for water heating systems. Electric heating requires thermostats with higher load output such as 16A models.
How does the thermostat control water valves?
It uses relay output terminals including NC, NO and COM. These terminals switch the valve according to temperature demand.
Can this thermostat connect to a building management system?
No. This model supports WiFi app control only. It does not support Modbus or BACnet for central building integration.
What is the minimum order quantity and can I get samples?
Thermostat samples are available. The usual minimum order quantity is about 300 units, but smaller trial quantities may also be discussed.
How can I place an order?
Please contact us to confirm your requirements. We will provide a proforma invoice. Payment supports TT, PayPal, Visa, with EXW, FOB, DAP terms.
How will the products be shipped?
Express delivery is recommended and takes around seven days. Air freight is similar, while sea shipping takes about one month depending on destination.
Need Support?
If you need help selecting a WiFi water heating thermostat, please contact us. Our team can support your project and application requirements.
You can refer to below links:
Electric Underfloor Heating Thermostat
Water Underfloor Heating Thermostat
Final Note / Practical Takeaway:This WiFi water heating thermostat provides reliable valve control and remote access. It is suitable for indoor heating projects requiring flexible and stable temperature management. [More models: heating thermsotat]





