The ETOP smart WiFi thermostat is expertly engineered for high-demand electric heating systems, including baseboard heaters, electric radiators, and convection panels. Featuring a robust 16A relay and optional compatibility with the European Pilot Wire (Fil Pilote) protocol, it offers precise, energy-efficient temperature control for your heating installations.
Designed to handle high-capacity loads, the HT-09 smart thermostat features a robust 16A relay, making it the perfect upgrade for heavy-duty electric heating applications. Whether you are managing electric baseboard heaters, radiant wall panels, or freestanding electric radiators, it delivers ultra-high-precision room temperature regulation, minimizing energy waste without sacrificing comfort.
While serving as a powerful standard electric thermostat, it also incorporates native support for the European Pilot Wire (Fil Pilote) protocol. This allows seamless communication with modern French and EU radiators, transmitting multiple operating modes (such as Comfort, Eco, Anti-frost, and Standby) over a single control wire, streamlining installation and maximizing energy compliance.
Step into the modern IoT era with built-in 2.4GHz WiFi functionality. Users can easily monitor and schedule their home heating via the Tuya Smart or Smart Life App from anywhere in the world. Customize different 7-day schedules according to your habits. Just one phone to adjust all temperatures across your home.


The HT-09 intelligent thermostat integrates smoothly with Amazon Alexa and Google Assistant. Remote voice control brings you a more comfortable, hands-free smart living experience.

Details determine success or failure. The built-in Open Window Detection automatically pauses heating when a sudden temperature drop is sensed, saving massive energy. Worried about accidental touches by kids or guests? The integrated Child Lock function ensures your settings remain secure.


Intelligence is not just talk; we are committed to every detail to bring you the most comfortable home environment.


E-TOP offers flexible manufacturing options. From custom-branded interfaces to tailored backend logic, our engineering team adapts this thermostat to your requirements. Furthermore, our controllers meet the highest international standards for safety and reliability.
Learn more about our comprehensive Thermostat OEM & ODM Solutions.
| Display | Smart LCD Digital Touch Screen |
| Smart App Support | Tuya Smart, Smart Life (Tuya Cloud Platform) |
| WiFi Protocol | 2.4GHz (5G not supported) |
| Power Supply | 230Vac, 50/60Hz |
| Max Current / Load | 16A (For Electric Heaters & Baseboards) *Pilot Wire (Fil Pilote) control available as an optional add-on |
| Set Temp. Range | 5 ~ 35 ℃ |
| Ambient Temp. | 0 ~ 50 ℃ |
| Protection & Limits | Frost Protection (5~15℃), Overheat Protection (20~80℃) |
| Sensors | Internal Air Sensor + External Floor Sensor Supported (NTC 10K) |
| Accuracy | ±0.5 ℃ |
| Operating Modes | Manual, Holiday, and PRG (Programmable) Mode |
| Programmability | 7 days, 4 periods/day (Customizable) |
| Smart Functions | Open Window Detection, Child Lock |
| Thermostat Dimension | 86 x 86 x 16.1 mm (Fits standard EU box) |
| Material | ABS+PC (RoHS certified, Fire-retardant) |
| Certificates | CE (RED/EMC/LVD), RoHS |
| OEM & ODM | 1. Customized logo, branding, and packaging 2. Customized UI and software control logic 3. Hardware PCB & schematic modifications |

A: Yes. The HT-09 is built with a heavy-duty 16A relay, safely handling up to 3600W at 230V. It is specifically engineered to replace standard line-voltage thermostats for electric baseboard heaters, radiant ceiling panels, and convection heaters without requiring external contactors.
A: Standard electric thermostats switch the power on and off directly via a relay. The Pilot Wire protocol, prevalent in France and parts of Europe, sends specific voltage signals over a dedicated control wire to switch the radiator between modes (Comfort, Eco, Anti-frost, Standby). The HT-09 can be customized to support either or both methods depending on your market needs.
A: Absolutely. If your system lacks a Pilot Wire, simply ignore that optional terminal. The thermostat will function perfectly as a standard 16A controller, regulating room temperature by switching your heating elements directly.
A: Yes. Using the Tuya Smart or Smart Life app via a 2.4GHz WiFi connection, users can group multiple HT-09 thermostats to create independent heating zones. This allows synchronized control of electric heaters across different rooms, along with seamless voice control via Google Assistant and Amazon Alexa.
A: Yes, as a direct manufacturer, we offer comprehensive B2B OEM/ODM solutions. We can customize the touch interface, housing colors, logo printing, and adjust the internal hardware and firmware (such as adding or removing the Pilot Wire module) to meet your regional market requirements.