Quick Summary
HTW-TFT12-16A3 is an electric floor heating thermostat that controls heating output using a 16A relay and supports WiFi for app control. It uses an internal sensor and supports an external sensor for floor protection. This helps keep heating safe and stable in daily use.
This page explains how this electric floor heating thermostat works in real projects. It shows the control logic, wiring setup, and key parameters. It also explains custom options and common questions to help with system selection and planning.
Key Functional Highlights
(This section introduces the main control functions and their engineering value in the electric floor heating system.)
1. Electric heating control with external sensor protection
This electric floor heating thermostat uses both room sensing and an external floor sensor. The floor sensor limits surface temperature, with a range of 20°C to 95°C, default set at 60°C. This helps prevent overheating during operation. It protects floor materials, especially wood or sensitive finishes. This reduces the risk of damage during prolonged heating and keeps the system stable and easy to manage.
If a water heating thermostat or a boiler type is required, one may refer to this model instead (please click → HTW-TFT12-3ANV3).
2. Colourful touch screen with multi-language display
The colourful touch screen makes the interface clear and easy to use. Multi-language support helps in international projects. This reduces user errors and simplifies day-to-day operations.
3. Adjustable backlight brightness
The screen brightness can be adjusted based on the environment. It avoids glare at night and improves comfort. This is useful in bedrooms or quiet spaces.
4. Programmable scheduling function
The programmable function allows time-based heating control. It helps reduce energy use during off periods. This supports stable and efficient daily operation.
5. WiFi app control
WiFi allows remote control through a mobile app. Users can change settings without going to the room. This adds flexibility for daily use and management.
Product Design and Display
(This section shows the thermostat appearance, screen interface, or installation dimensions of this specific model.)


Technical Specifications
(This section lists the key technical parameters relevant to this thermostat model.)
| Parameter | Value |
|---|---|
| Power Supply | 100–240Vac, 50/60Hz |
| Output Load | 16A (electric floor heating) |
| Sensor Type | NTC3950, 10K |
| Setpoint Range | 5–35°C |
| Installation | 86×86 mm box or EU round box |
| Protection Class | IP20 |
| Warranty | 2 years |
Wiring Diagram
(This section provides the wiring diagram for this thermostat in the relevant HVAC control system.)

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 |
| 16A | Electric Underfloor Heating, with L+N line voltage output terminals + External Sensor |
| NV | Boiler Heating, with Non-Voltage Dry Contact |
| 1/3 | 1 = Standalone; 3 = with WiFi communication |
| 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 & Customisation
(This section describes project suitability, system limitations, and available customisation options.)
This electric floor heating thermostat is not suitable for low-voltage systems like 24V fan coil units. It cannot directly control water valves or boiler contacts. It is also not designed for BMS use without communication support.
Despite these limits mentioned above, some functions can be customised. Communication options or control settings can be adjusted. We can review your project and suggest suitable solutions.
OEM customisation is also available for project needs. This includes logo printing, colour changes, and label updates. These help match project branding and installation requirements.
Certificates and Compliance
(This thermostat complies with European market requirements and is supported by certifications such as CE, RoHS, LVD test reports, EMC test reports, etc)

Exhibition Moments
(Our team regularly participates in international HVAC exhibitions such as Febrava in Brazil, The Big 5 in Dubai, and ISK-SODEX in Turkey, etc.)

Frequently Asked Questions
Q1: Can this thermostat be used for water heating systems?
This model is for electric floor heating systems only. It uses a 16A relay for electric load control. Water systems need different output types.
Q2: Does it support both internal and external temperature sensors?
Yes, it supports both internal and external sensors. The external sensor helps protect the floor. This improves safety during heating.
Q3: How does the control method work in electric heating systems?
It uses on/off control to switch the heating load. This method is simple and stable. It works well in electric floor heating systems.
Q4: Is this model suitable for different project environments?
Yes, it supports multiple languages and flexible settings. This helps in different regions. It also makes the operation easier for users.
Q5: What is the MOQ, and do you support samples?
We support samples for testing and checking. The usual MOQ is 300 units. Smaller orders, like 100 units, can be discussed.
Q6: How can I place an order and arrange shipment?
Please contact us to confirm your needs and get a PI. Payment supports TT, PayPal, and Visa. Shipping terms include EXW, FOB, and DAP.
Q7: How long does it take to prepare the products?
Standard samples can be sent within 7 days. Custom samples usually take 3–5 weeks. Bulk orders like 300 units take about one month.
Q8: What are the shipping options?
Courier delivery takes about 7 days door-to-door. Air freight takes around 7 days. Sea freight usually takes over one month.
Need Help Choosing the Right Model?
If you are planning an electric heating project, please feel free to contact us. We can help you choose the right electric floor heating thermostat.
Related Thermostat Models
For more details, please click here directly: Wi-Fi Thermostats | Electric Floor Thermostats | Water Heating Thermostats
Final Note
Electric heating projects need stable control and safe floor protection. This model works as an electric floor heating thermostat with WiFi control. It helps keep heating stable and improves energy use in daily operation.







