Quick Summary
The HTW-WKT18-3ANV3 WiFi Wireless Heating Thermostat is designed for water and boiler heating systems. It uses a wireless panel and receiver structure. It supports 3A relay output and WiFi control. The internal sensor manages room temperature with stable and simple logic.
This page explains how the WiFi Wireless Heating Thermostat works in real projects. It covers control logic, wiring, and key parameters. It also includes installation guidance and common questions. Basic OEM and ODM options can be discussed for project requirements.
Key Features
(This section explains the core control functions and their practical value.)
(01) Wireless and WiFi combined control
This WiFi Wireless Heating Thermostat combines wireless communication with app control. The panel connects to the receiver without wiring. WiFi allows remote adjustment. This improves flexibility for both installation and daily control. If you do not need WiFi function, please refer to this link: HTW-WKT18-3ANV1.
(02) Dual system support for heating projects
The thermostat supports both water heating and boiler heating systems. It uses a 3A relay output for switching. This allows one model to handle different heating types in residential or light commercial projects.
(03) Battery powered control panel
The control panel uses 2 AA batteries or USB power. It avoids wiring constraints and simplifies installation. This design is useful when power access at the control position is limited.
(04) Stable internal temperature sensing
The thermostat uses an internal NTC sensor for temperature control. It keeps system logic simple and stable. This is suitable for standard indoor spaces where external sensors are not required.
Product Design and Display
(This section shows the product’s dimensions and the interface layout.)

The thermostat features an LED display with capacitive touch buttons. The panel design is clean and easy to use. The receiver is wall-mounted and compact. This layout supports simple installation and clear operation.
Technical Specifications
(This section lists the key parameters of this wifi wireless heating thermostat for reference and project confirmation.)
| Parameter | Value |
|---|---|
| Receiver Power Supply | 95~230V AC, 50/60Hz |
| Panel Power Supply | 2 × AA Battery / USB |
| Relay Load | 3A (water heating / boiler) |
| Accuracy | 0.5°C |
| Temperature Range | 5~35°C |
| Sensor | NTC3950, 10K |
| Ambient Condition | 0~45°C, 5~95% RH |
| Protection Class | IP20 |
Wiring Diagram
(This section provides the wiring reference diagram for correct installation.)

The receiver connects directly to the heating system through relay terminals. The control panel communicates wirelessly. WiFi setup enables app connection. Proper pairing ensures stable communication and reliable control.
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 output + External Sensor |
| NV | Boiler Heating, with Non-Voltage Dry Contact |
| 3 | WiFi |
| Example HTW-WF11-xx: if xx = 16A3, it stands for electric floor heating with external sensor and Wi-Fi. Most models are ready-made. Contact us to confirm availability. | |
Project Fit & Customization
(This section explains where the wifi wireless heating thermostat can be used, its limits, and OEM/ODM options.)
This WiFi Wireless Heating Thermostat is not suitable for BMS integration systems. It does not support Modbus or BACnet protocols. It is also not suitable for electric floor heating or projects requiring external sensors.
Despite these limits mentioned above, ODM customization can be discussed. Communication functions or control logic may be adjusted. Hardware structure or interface changes can be evaluated based on project requirements.
OEM customization is supported for branding and packaging. This includes logo printing, colour changes, and label design. These options help adapt the product to different markets and customer needs.
Certificates and Compliance


Frequently Asked Questions
Q1. Can this wifi wireless heating thermostat control both water and boiler heating?
Yes, it supports both systems. The 3A relay output ensures stable switching and reliable operation in standard heating applications.
Q2. Does this wifi wireless heating thermostat support mobile app control?
Yes, this WiFi Wireless Heating Thermostat supports app control. Users can adjust temperature and settings remotely through mobile devices.
Q3. Does it need wiring between panel and receiver?
No, the panel and receiver communicate wirelessly. This reduces installation time and allows flexible placement in different room layouts.
Q4. What is the MOQ and can we get samples?
We support sample orders. Standard MOQ is 300 units, but smaller quantities like 100 units may be discussed for trial or project testing.
Q5. How do we place an order?
Please contact us with your requirements. We will confirm details and issue a PI. Payment supports TT, PayPal, Visa, with EXW, FOB, DAP terms.
Q6. How will the products be shipped?
Express delivery is recommended and takes about 7 days. Air shipping is similar. Sea shipping usually takes over one month depending on destination.
Related Thermostat Models
For other models, please contact us for selection advice and project support. You can also refer to below links:
Water Underfloor Heating Thermostat
Electric Underfloor Heating Thermostat
This WiFi Wireless Heating Thermostat is suitable for projects needing flexible installation and remote control. It works well in residential heating systems. For advanced integration or higher load systems, alternative models are recommended. 【More models: heating thermostat】






