E-TOP’s RF Wireless Programmable Boiler Thermostat is the premier retrofit solution for modernizing European gas boiler systems without the need for new wiring. Operating on a stable 868MHz frequency, this transmitter-receiver kit eliminates wall drilling and reduces installation labor by up to 60%. Fully CE (RED) and UKCA certified, it supports universal dry contact connections, making it compatible with 95% of boiler brands. For HVAC distributors and installers, it offers a reliable, energy-efficient (Open Window Detection), and cost-effective upgrade for both heritage buildings and modern residential projects.
Plug & Play: Specifically designed for European boiler retrofits—no wall drilling or new cabling required.
Time-Saving: Reduces installation labor by 60%. Upgrade any dry-contact boiler in under 30 mins.
Zero Damage: Perfect for heritage buildings or finished homes; keeps your interior decor intact.
Custom Schedules: Supports 5+2, 6+1, or 7-day individual programs to match any lifestyle.
6 Time Slots: 6 distinct temperature periods per day, ensuring maximum comfort when you're home and maximum savings when you're away.
868MHz Stability: Professional-grade frequency ensures a stable connection between the [wireless thermostat] and boiler receiver without WiFi interference.
OpenTherm Ready: Supports bidirectional communication with modulating boilers for professional-grade energy efficiency.
Optional WiFi: Available in smart versions for users who want phone App control and Voice Control (Alexa/Google Home).
Open Window Detection: Automatically pauses heating during sudden temperature drops to prevent energy waste.
Frost Protection: Built-in safety logic triggers the boiler when temperature falls below 5°C to prevent frozen and burst pipes.
Child Lock: One-touch lock to prevent unauthorized or accidental setting changes—ideal for families and landlords.
Temp. Calibration: Allows for professional sensor offset adjustment to ensure high-precision environment control.
The WT-02 receiver features a professional dry-contact relay for universal compatibility. It serves as a seamless interface to control your wall-mounted Gas Boiler Thermostat systems safely. Whether for a new property or a classic European energy upgrade project, this kit ensures stable, high-efficiency boiler automation.
The receiver provide voltage-free output for heating sources control.
Thermostat
Receiver:
| Display | LCD Display |
| Power Supply | 2xAAA Battery |
| Receiver Max. Load | 10A (Resistive), 3A (Inductive) - Ideal for most gas boilers |
| RF Frequency | 868 MHz (Stable for EU), 433 MHz (Optional) |
| Ambient Temp. | 0~50 ℃ |
| Operating Room Temp | 5-35 ℃ |
| Accurancy | ±0.5 ℃ |
| Programmability | 7 Days Programmable |
| Sensor | NTC10K |
| Protection Class | IP20 |
| Material | Fire-retardant ABS+PC (RoHS certified) |
| Product Certificate | TUV Rheinland CE (RED, EMC, LVD), UKCA, RoHS, REACH |
| Factory Quality System | ISO 9001:2015, ISO 14001:2015 Certified |
| 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) |
A: Yes, absolutely. The WT-02 is specifically engineered as a plug-and-play boiler retrofit solution across Europe. The receiver connects directly to any standard dry-contact or modulating boiler (OpenTherm compatible), while the battery-powered transmitter can be placed anywhere using the included table stand or wall mount—requiring zero wall drilling or new cabling.
A: The WT-02 standard version operates on the professional 868MHz RF frequency, which is the premium heating industry standard in the EU due to its high penetration and low interference. For specific markets like the UK or Greece, a 433MHz RF version is also optional. Both options provide a long-range, stable wireless connection that easily penetrates thick brick walls without interfering with home Wi-Fi networks.
A: Our WT-02 wireless thermostat series is fully compliant with European and UK market access laws. It is officially certified by TUV Rheinland with CE (including RED, EMC, and LVD directives) and UKCA certificates. Additionally, the outer shell is made of premium fire-retardant ABS+PC materials that are fully RoHS and REACH certified for environmental and residential safety.
A: Yes, we provide full OEM/ODM manufacturing support. The WT-02 is available in a Smart WiFi Version that integrates seamlessly with the Tuya Smart and Smart Life App, supporting voice control via Amazon Alexa and Google Assistant. For wholesale and B2B distributors, we offer tailor-made customization options, including custom logo printing, neutral or branded packaging, and custom software/hardware configurations with a stable factory lead time.
E-TOP’s RF Wireless Programmable Boiler Thermostat is the premier retrofit solution for modernizing European gas boiler systems without the need for new wiring. Operating on a stable 868MHz frequency, this transmitter-receiver kit eliminates wall drilling and reduces installation labor by up to 60%. Fully CE (RED) and UKCA certified, it supports universal dry contact connections, making it compatible with 95% of boiler brands. For HVAC distributors and installers, it offers a reliable, energy-efficient (Open Window Detection), and cost-effective upgrade for both heritage buildings and modern residential projects. Item No.: WT-02 Communication: 868MHz Wireless RF (Stable signal, no wiring needed) Installation: 2-in-1 Design (Wall-mounted or portable Table-stand) Programming: 7-day programmable (5+2/6+1/7) for maximum comfort Energy Saving: Open Window Detection & Frost Protection built-in Safety: Child lock & Temp. calibration features Build: Fire-retardant ABS+PC material with soft white backlight Market Ready: CE, RoHS, REACH certified; ISO 9001/14001 factory
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E-TOP’s RF Wireless Programmable Boiler Thermostat is the premier retrofit solution for modernizing European gas boiler systems without the need for new wiring. Operating on a stable 868MHz frequency, this transmitter-receiver kit eliminates wall drilling and reduces installation labor by up to 60%. Fully CE (RED) and UKCA certified, it supports universal dry contact connections, making it compatible with 95% of boiler brands. For HVAC distributors and installers, it offers a reliable, energy-efficient (Open Window Detection), and cost-effective upgrade for both heritage buildings and modern residential projects. Item No.: WT-02 Communication: 868MHz Wireless RF (Stable signal, no wiring needed) Installation: 2-in-1 Design (Wall-mounted or portable Table-stand) Programming: 7-day programmable (5+2/6+1/7) for maximum comfort Energy Saving: Open Window Detection & Frost Protection built-in Safety: Child lock & Temp. calibration features Build: Fire-retardant ABS+PC material with soft white backlight Market Ready: CE, RoHS, REACH certified; ISO 9001/14001 factory
Learn More
E-TOP’s RF Wireless Programmable Boiler Thermostat is the premier retrofit solution for modernizing European gas boiler systems without the need for new wiring. Operating on a stable 868MHz frequency, this transmitter-receiver kit eliminates wall drilling and reduces installation labor by up to 60%. Fully CE (RED) and UKCA certified, it supports universal dry contact connections, making it compatible with 95% of boiler brands. For HVAC distributors and installers, it offers a reliable, energy-efficient (Open Window Detection), and cost-effective upgrade for both heritage buildings and modern residential projects. Item No.: WT-02 Communication: 868MHz Wireless RF (Stable signal, no wiring needed) Installation: 2-in-1 Design (Wall-mounted or portable Table-stand) Programming: 7-day programmable (5+2/6+1/7) for maximum comfort Energy Saving: Open Window Detection & Frost Protection built-in Safety: Child lock & Temp. calibration features Build: Fire-retardant ABS+PC material with soft white backlight Market Ready: CE, RoHS, REACH certified; ISO 9001/14001 factory
Learn More
E-TOP’s RF Wireless Programmable Boiler Thermostat is the premier retrofit solution for modernizing European gas boiler systems without the need for new wiring. Operating on a stable 868MHz frequency, this transmitter-receiver kit eliminates wall drilling and reduces installation labor by up to 60%. Fully CE (RED) and UKCA certified, it supports universal dry contact connections, making it compatible with 95% of boiler brands. For HVAC distributors and installers, it offers a reliable, energy-efficient (Open Window Detection), and cost-effective upgrade for both heritage buildings and modern residential projects. Item No.: WT-02 Communication: 868MHz Wireless RF (Stable signal, no wiring needed) Installation: 2-in-1 Design (Wall-mounted or portable Table-stand) Programming: 7-day programmable (5+2/6+1/7) for maximum comfort Energy Saving: Open Window Detection & Frost Protection built-in Safety: Child lock & Temp. calibration features Build: Fire-retardant ABS+PC material with soft white backlight Market Ready: CE, RoHS, REACH certified; ISO 9001/14001 factory
Learn More
E-TOP’s RF Wireless Programmable Boiler Thermostat is the premier retrofit solution for modernizing European gas boiler systems without the need for new wiring. Operating on a stable 868MHz frequency, this transmitter-receiver kit eliminates wall drilling and reduces installation labor by up to 60%. Fully CE (RED) and UKCA certified, it supports universal dry contact connections, making it compatible with 95% of boiler brands. For HVAC distributors and installers, it offers a reliable, energy-efficient (Open Window Detection), and cost-effective upgrade for both heritage buildings and modern residential projects. Item No.: WT-02 Communication: 868MHz Wireless RF (Stable signal, no wiring needed) Installation: 2-in-1 Design (Wall-mounted or portable Table-stand) Programming: 7-day programmable (5+2/6+1/7) for maximum comfort Energy Saving: Open Window Detection & Frost Protection built-in Safety: Child lock & Temp. calibration features Build: Fire-retardant ABS+PC material with soft white backlight Market Ready: CE, RoHS, REACH certified; ISO 9001/14001 factory
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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
