Quick Summary

HTW-WF10-3A1 is a water heating thermostat designed for water heating systems. It uses NC, NO and COM terminals for valve control. The thermostat works with standard voltage power supply. This water heating thermostat ensures stable and reliable heating control.

This page explains how the water heating thermostat works in real 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 application guidance are provided.

Key Features

(This section explains the core control functions and their practical value.)

01. Valve Control with Relay Output
The water heating thermostat uses NC, NO and COM terminals. It controls water valves in heating systems. This allows stable switching between heating states in room applications. We have another model HTW-WF10-3A3 which support Tuya WiFi function.

02. Stable Temperature Regulation
The thermostat uses an internal sensor for temperature detection. It maintains room temperature within a defined range. This improves comfort and reduces unnecessary heating operation.

03. Clear White Backlit Display
The white backlit screen shows temperature and status clearly. Users can read the display easily in different lighting conditions. This supports simple daily operation and adjustment.

Product Design and Display

(The product’s dimensions and the interface layout.)

Technical Specifications

(The key parameters for reference and project confirmation.)

Parameter	Value
Power Supply	100~240Vac
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

(This section explains what configuration the model code refers to.)

Heating series	xx stands for
3A	Water Heating, with NC+NO+COM output terminals
1	1 = Standalone
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 direct high-load electrical switching. Projects using electric heating cables should select 16A thermostat models.

It is not designed for BMS integration or network control. Communication protocols such as Modbus or WiFi are not supported. Centralised control systems require communication-enabled thermostats.

Despite these limits mentioned above, some functional adjustments may be discussed. Control logic or display behaviour can be modified based on project needs. All changes depend on technical feasibility and production conditions. OEM services such as logo printing and packaging customisation are supported.

Certificates and Compliance

Frequently Asked Questions

Can this water heating thermostat be used for electric heating systems?

No. It is designed for water heating systems. Electric heating requires thermostats with high-load output such as 16A models.

How does the thermostat control water heating valves?

It uses relay output terminals including NC, NO and COM. These terminals switch the valve based on room temperature demand.

Does this thermostat support communication protocols?

No. This is a standalone thermostat. It does not support Modbus, WiFi or other communication for central system 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 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