The HT-02 stands out as a premier wired thermostat solution that eliminates the need for 230V wall wiring. Powered by 2xAAA alkaline batteries, it ensures your heating system remains controllable even during power fluctuations. The surface-mounted design allows for a quick and clean installation on any wall surface.
Advanced Algorithms: Features an adjustable switching differential to optimize boiler firing rates, reducing wear and tear.
Open Window Logic: If a sudden temperature drop is detected, the HT-02 automatically pauses heating to prevent energy waste.
Holiday & Economy Modes: Easily switch between programmed comfort and energy-saving modes with a single touch.
As a specialized HVAC control manufacturer, E-TOP provides full support for the HT-02 series, including private labeling (OEM) and protocol integration (OpenTherm). Our units are fully compliant with UKCA and European market standards, ensuring a smooth entry for distributors and contractors.
Looking for Smart Connectivity? Explore our full range of [Zigbee & WiFi Smart Thermostats] to find the perfect remote-control solution for your project."
| Display | LCD Display |
| Power Supply | 2xAAA Battery |
| Max. Load | 0.5A |
| Ambient Temp. | 0~50 ℃ |
| Operating Room Temp | 5-35 ℃ |
| Accurancy | ±0.5 ℃ |
| Programmability | 5+1+1 Programmable |
| Sensor | NTC10K |
| Material | ABS+PC (Rohs certificated) |
| Certificate | CE(RED/EMC/LVD), Rohs |
| OEM & ODM | 1. Customized logo and package |
| 2. Customzied software ( change to customer’s user interface and control logic) | |
| 3. Customized hardware ( change the PCB and schematic based on the request) |
Product Dimensions：135 x 87.5 x 27.2mm
Must be installed by a qualified technician
A: E-TOP (Xiamen) Heating Technology Co., Ltd. is a professional ODM & OEM thermostat manufacturer established in 2003. We operate our own ISO9001-certified facility, providing full-stack services from PCB design to final assembly for global HVAC brands.
A: The HT-02 is a dedicated battery-powered wired thermostat designed for stability and simplicity without WiFi. If you require smartphone control, please explore our Zigbee or WiFi Smart Series which supports Tuya and Smart Life apps.
A: We provide comprehensive branding services for wholesale partners:
Logo Printing: Free of charge on the thermostat body for orders over 500pcs.
Custom Packaging: Fully customized retail boxes available for orders over 1000pcs.
Firmware Customization: We can adjust temperature ranges or switching differentials to meet specific local market requirements.
A: Yes. The HT-02 features a potential-free (Dry Contact) relay and optional OpenTherm protocol, making it fully compatible with major European boiler brands such as Worcester Bosch, Vaillant, and Potterton. It is fully certified with CE, UKCA, RoHS, and REACH for the EU and UK markets.
A: Samples: Ready within 3 working days.
Mass Production: Typically 25-30 days depending on customization requirements.
Warranty: We offer a 12-month quality guarantee and provide technical data sheets (TDS) for your after-sales support team.
The HT-02 is a professional-grade, battery-operated wired thermostat specifically designed for hydronic floor heating and gas boiler systems. Item No.: HT-02 (Battery Powered 2xAAA) Programmability: 7-day, 4-period programmable or manual/economy modes Backlight: High-contrast White LCD Backlight Material: Fire-resistant ABS+PC (IP30 Protection) Switching Rating: 0.5A for Boiler/Actuator control (Dry Contact) Temp. Accuracy: ±0.5°C with 5°C - 35°C Setpoint Range Other Functions: Child lock, Open window detection, Frost protection, Temp. calibration, Heat/Cool option Optional: OpenTherm protocol for precise digital boiler modulation (energy-saving) Certificate: CE, ROHS, UKCA, REACH Compliance Packing: Neutral White Box, OEM/ODM professional customization acceptable Product Dimensions：135 x 87 x 27.2mm
Learn More
The HT-02 is a professional-grade, battery-operated wired thermostat specifically designed for hydronic floor heating and gas boiler systems. Item No.: HT-02 (Battery Powered 2xAAA) Programmability: 7-day, 4-period programmable or manual/economy modes Backlight: High-contrast White LCD Backlight Material: Fire-resistant ABS+PC (IP30 Protection) Switching Rating: 0.5A for Boiler/Actuator control (Dry Contact) Temp. Accuracy: ±0.5°C with 5°C - 35°C Setpoint Range Other Functions: Child lock, Open window detection, Frost protection, Temp. calibration, Heat/Cool option Optional: OpenTherm protocol for precise digital boiler modulation (energy-saving) Certificate: CE, ROHS, UKCA, REACH Compliance Packing: Neutral White Box, OEM/ODM professional customization acceptable Product Dimensions：135 x 87 x 27.2mm
Learn More
The HT-02 is a professional-grade, battery-operated wired thermostat specifically designed for hydronic floor heating and gas boiler systems. Item No.: HT-02 (Battery Powered 2xAAA) Programmability: 7-day, 4-period programmable or manual/economy modes Backlight: High-contrast White LCD Backlight Material: Fire-resistant ABS+PC (IP30 Protection) Switching Rating: 0.5A for Boiler/Actuator control (Dry Contact) Temp. Accuracy: ±0.5°C with 5°C - 35°C Setpoint Range Other Functions: Child lock, Open window detection, Frost protection, Temp. calibration, Heat/Cool option Optional: OpenTherm protocol for precise digital boiler modulation (energy-saving) Certificate: CE, ROHS, UKCA, REACH Compliance Packing: Neutral White Box, OEM/ODM professional customization acceptable Product Dimensions：135 x 87 x 27.2mm
Learn More
The HT-02 is a professional-grade, battery-operated wired thermostat specifically designed for hydronic floor heating and gas boiler systems. Item No.: HT-02 (Battery Powered 2xAAA) Programmability: 7-day, 4-period programmable or manual/economy modes Backlight: High-contrast White LCD Backlight Material: Fire-resistant ABS+PC (IP30 Protection) Switching Rating: 0.5A for Boiler/Actuator control (Dry Contact) Temp. Accuracy: ±0.5°C with 5°C - 35°C Setpoint Range Other Functions: Child lock, Open window detection, Frost protection, Temp. calibration, Heat/Cool option Optional: OpenTherm protocol for precise digital boiler modulation (energy-saving) Certificate: CE, ROHS, UKCA, REACH Compliance Packing: Neutral White Box, OEM/ODM professional customization acceptable Product Dimensions：135 x 87 x 27.2mm
Learn More
The HT-02 is a professional-grade, battery-operated wired thermostat specifically designed for hydronic floor heating and gas boiler systems. Item No.: HT-02 (Battery Powered 2xAAA) Programmability: 7-day, 4-period programmable or manual/economy modes Backlight: High-contrast White LCD Backlight Material: Fire-resistant ABS+PC (IP30 Protection) Switching Rating: 0.5A for Boiler/Actuator control (Dry Contact) Temp. Accuracy: ±0.5°C with 5°C - 35°C Setpoint Range Other Functions: Child lock, Open window detection, Frost protection, Temp. calibration, Heat/Cool option Optional: OpenTherm protocol for precise digital boiler modulation (energy-saving) Certificate: CE, ROHS, UKCA, REACH Compliance Packing: Neutral White Box, OEM/ODM professional customization acceptable Product Dimensions：135 x 87 x 27.2mm
Learn More
The HT-02 is a professional-grade, battery-operated wired thermostat specifically designed for hydronic floor heating and gas boiler systems. Item No.: HT-02 (Battery Powered 2xAAA) Programmability: 7-day, 4-period programmable or manual/economy modes Backlight: High-contrast White LCD Backlight Material: Fire-resistant ABS+PC (IP30 Protection) Switching Rating: 0.5A for Boiler/Actuator control (Dry Contact) Temp. Accuracy: ±0.5°C with 5°C - 35°C Setpoint Range Other Functions: Child lock, Open window detection, Frost protection, Temp. calibration, Heat/Cool option Optional: OpenTherm protocol for precise digital boiler modulation (energy-saving) Certificate: CE, ROHS, UKCA, REACH Compliance Packing: Neutral White Box, OEM/ODM professional customization acceptable Product Dimensions：135 x 87 x 27.2mm
Learn More
The HT-02 is a professional-grade, battery-operated wired thermostat specifically designed for hydronic floor heating and gas boiler systems. Item No.: HT-02 (Battery Powered 2xAAA) Programmability: 7-day, 4-period programmable or manual/economy modes Backlight: High-contrast White LCD Backlight Material: Fire-resistant ABS+PC (IP30 Protection) Switching Rating: 0.5A for Boiler/Actuator control (Dry Contact) Temp. Accuracy: ±0.5°C with 5°C - 35°C Setpoint Range Other Functions: Child lock, Open window detection, Frost protection, Temp. calibration, Heat/Cool option Optional: OpenTherm protocol for precise digital boiler modulation (energy-saving) Certificate: CE, ROHS, UKCA, REACH Compliance Packing: Neutral White Box, OEM/ODM professional customization acceptable Product Dimensions：135 x 87 x 27.2mm
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Address:No.6 of Tong'an Industrial Park, Meixi Rd,Tong'an District, Xiamen China 361100
Phone:+86 0592 6155792
Email:info@etopcontrols.com
