Quick Summary
The HTW-WF01-EC is designed for fan coil systems with EC fans. It supports 0–10V control and 4 pipe heating and cooling systems. It helps keep room temperature stable and improves system efficiency in daily use.
This Digital Room Thermostat is suitable for HVAC projects that need stable control and simple integration. It supports programmable operation and key control functions. It helps reduce manual work and improve comfort. The following sections describe how each function works in real projects.

Key Functional Highlights
These functions are designed for practical HVAC control and stable operation.
(01) EC fan control (0–10V)
The thermostat supports EC fan control through a 0–10V signal. Fan speed can change smoothly. This helps reduce noise and save energy. In real use, this Digital Room Thermostat improves airflow control.
(02) 4 pipe heating and cooling system
The thermostat supports 4 pipe systems. Heating and cooling valves are controlled separately. This allows better system flexibility. This thermostat fits projects that need both modes at the same time.
(03) Programmable control
The thermostat supports time scheduling. Users can set temperature based on daily needs. This reduces energy use during low demand. This thermostat supports efficient operation.
(04) Fan coil and valve control
The thermostat controls the fan coil unit and two valves. Heating and cooling valves work independently. This keeps room temperature stable. This thermostat improves control accuracy.
(05) Key-card function
The key-card input is useful for hotel rooms. The system can stop when no one is inside. This reduces energy waste. This thermostat supports energy saving in real projects.

Product Design and Display
The design is simple and suitable for indoor use. The interface is clear and easy to understand. It fits standard wall boxes. This thermostat is suitable for both residential and commercial environments.


Technical Specifications
Key parameters are listed below for installation and system matching.
| Parameter | Value |
|---|---|
| Power Supply | 95–240VAC, 50/60Hz |
| Power Consumption | 5A |
| Set Range | 5–35°C |
| Accuracy | ±0.5°C or ±1°F |
| Installation | 86×86 mm or EU 60mm round box |
| Protection Level | IP20 |
| Shell Material | PC+ABS (Fireproof) |
| Warranty | 2 Years |
Wiring and Installation
The thermostat connects to the fan coil unit, EC fan, and valves. The 0–10V output controls fan speed. Separate outputs control heating and cooling valves. This Digital Room Thermostat helps reduce wiring complexity and improves system stability.

Model Code Guide
Understanding the model code helps match the thermostat to the right system and avoid selection mistakes.
| Fan coil series | xx stands for |
| 2 | 2-pipe fan coil system |
| 4 | 4-pipe fan coil system |
| W | WiFi |
| EC | EC fan 0-10V |
| B | BACnet |
| N | Modbus communication |
| K | Keycard |
| E | External sensor |
| M | 0-10V modulating valve |
| Example WF01-FC-XX | If XX=KB, it means 2/4-pipe FCU thermostat with BACnet function and external sensor (If you need this, click here) |
Project Fit & Customization
This model is suitable for fan coil systems with EC fans. It supports 4 pipe systems and precise control needs. This Digital Room Thermostat is often used in hotels and office buildings.
Some functions can be adjusted. Communication or control logic can be discussed. This Digital Room Thermostat supports flexible project requirements.
OEM support is available. Logo, colour, and labels can be customised. This Digital Room Thermostat can match different markets.
Certifications and Compliance
The thermostat meets common safety standards. It supports stable operation. This Digital Room Thermostat is suitable for long-term use.

Exhibition Moments
The product is shown in HVAC exhibitions. It helps improve design and application. This Digital Room Thermostat is used in many projects.

Frequently Asked Questions
Q1: Does it support EC fan control?
Yes, it supports 0–10V EC fan control. This Digital Room Thermostat allows smooth speed control.
Q2: Is it suitable for 4 pipe systems?
Yes, it supports 4 pipe systems. Heating and cooling are controlled separately.
Q3: Can it control both valves and fan coil unit?
Yes, it controls both. This Digital Room Thermostat manages fan and valves together.
Q4: Does it support hotel energy saving?
Yes, it supports key-card input. This helps reduce energy use in empty rooms.
Q5: What is the MOQ and can I get samples?
MOQ is 300 units. Samples are available. Smaller orders can be discussed.
Q6: How to place an order?
Contact us for PI. Payment supports TT and PayPal. Shipping supports EXW, FOB, and DAP.
Q7: How long is the lead time?
Samples take about 7 days. Custom orders take 3–5 weeks. Bulk orders need about one month.
Q8: What shipping options are available?
Express takes about 7 days. Air is similar. Sea shipping takes about one month.
Need Support?
If you are selecting a model or planning a project, please contact us. We can help choose the right thermostat.
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Precise control is important in HVAC systems. This Digital Room Thermostat supports EC fan and 4 pipe systems. It helps improve comfort and system performance.






