Quick Summary
HTW-HT09B-16A1 is an Electrical Underfloor Heating Thermostat for electric floor heating systems. It controls heating output using relay switching and temperature sensing. The unit supports internal and external sensors for stable control. It works with 95–240Vac supply and uses a VA screen for clear display.
This page explains how the Electrical Underfloor Heating Thermostat works in projects. It covers control logic, wiring method, and parameter setup. It also explains model configuration and possible customisation. Typical questions and answers are included for quick reference.
Key Features
(This section explains the core control functions and their practical value.)
01 Relay-Based Heating Control
The Electrical Underfloor Heating Thermostat controls heating through relay switching. It compares measured temperature with setpoint. This keeps heating stable and reduces unnecessary switching during operation. This series can also support Tuya WiFi model HTW-HT09B-16A3.
02 Dual Sensor Temperature Protection
The thermostat supports both internal and external sensors for temperature detection. Internal sensor manages room air temperature. External sensor limits floor temperature and protects the heating system during long use.
03 Clear VA Screen Display
The VA screen provides clear temperature display under different lighting conditions. Black background improves visibility. This helps users check settings quickly and reduces operation mistakes during daily use.
Product Design and Display
(This section 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 |
| Sensor | NTC3950, 10K |
| Setpoint Range | 5~35°C |
| Display Range | 5~99°C |
| Material | PC + ABS (Fireproof) |
| Protection Class | 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 |
| 16A | Electric Underfloor Heating, with L+N line voltage output terminals + External Sensor |
| NV | Boiler Heating, with Non-Voltage Dry Contact |
| 1 | 1 = Standalone |
| Example HTW-HT09B-xx: if xx = 16A1, it stands for electric floor heating with external sensor support. 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 Electrical Underfloor Heating Thermostat is not suitable for water or boiler systems. It does not support valve or fan coil control. It is not designed for WiFi or BMS integration. It works only with electric heating loads.
Despite these limits mentioned above, ODM customisation can be discussed. Control logic or sensor settings may be adjusted for project needs. Interface layout or display behaviour can also be adapted. Final solution depends on technical evaluation.
OEM services are available for branding and appearance changes. Logo printing, colour options, and label design can be supported. Packaging and minor design adjustments may also be arranged for bulk orders.
Certificates and Compliance
Frequently Asked Questions
Q1. What system is this Electrical Underfloor Heating Thermostat used for?
It is used for electric floor heating systems and controls heating output through relay switching based on temperature feedback.
Q2. How is the thermostat installed and wired?
It is installed in a standard electric box and connected to L and N power supply and heating load terminals following standard installation practice.
Q3. Does it support external floor sensor connection?
Yes, it supports both internal and external sensors, allowing better temperature control and protecting the floor from overheating during operation.
Q4. What is the MOQ and can I order samples?
We support sample orders. Standard MOQ is 300 units, but smaller trial quantities such as 100 units can also be discussed.
Q5. How can I place an order?
Please contact us to confirm requirements. We will provide a proforma invoice. Payment supports TT, PayPal, Visa, and terms like EXW, FOB, or DAP.
Q6. How will the products be shipped?
Courier delivery is recommended and takes about 7 days. Air shipping also takes around 7 days, while sea freight usually takes over one month.
Related Thermostat Models
If you need help with product selection or project setup, please contact us. Our team can support your application. You also can refer to below links:
Water Underfloor Heating Thermostat
Wired Boiler Heating Thermostat
Final Note / Practical Takeaway:This Electrical Underfloor Heating Thermostat provides stable and simple heating control. It suits projects requiring clear installation, reliable temperature regulation, and consistent daily operation. 【More models: heating thermostat】
