Quick Summary
The HTW-WF81-723S Smart Modbus Heating Thermostat is used for water and gas boiler heating systems. It provides 3A dry contact output for safe switching. It supports Wifi and Modbus communication. The Smart Modbus Heating Thermostat ensures stable temperature control and system integration.
This page explains how the Smart Modbus Heating Thermostat works in HVAC systems. It includes control functions, wiring reference, and key parameters. It also covers integration options and project considerations. Typical questions help users understand practical use.
Key Functional Highlights
(This section explains the core control functions and their practical value.)
1. Boiler and Water Heating Control
The Smart Modbus Heating Thermostat provides 3A dry contact output. It is suitable for water and gas boiler systems. This ensures stable control and safe switching in residential HVAC applications.
2. Non-Voltage Output Terminals
The thermostat uses non-voltage dry contact terminals. This avoids direct voltage output. It improves compatibility with boiler systems and ensures reliable operation.
3. Programmable Temperature Scheduling
The Smart Modbus Heating Thermostat supports daily programming. Users can set multiple time periods. This helps maintain comfort while reducing energy use.
4. Wifi and Modbus Communication
The thermostat supports both Wifi and Modbus communication. Wifi allows remote control through mobile app. Modbus enables integration into building management systems. (If need wifi only,please check here)
5. Multi-Language App Support
The mobile application supports 17 languages. It improves usability for global users. The interface remains simple and easy to use.
6. Negative Screen White UI
The thermostat uses a negative screen with white UI. It improves display clarity. The interface remains easy to read in different lighting conditions.
Display
(The thermostat appearance and interface layout to fully grasp the display effect and performance of the thermostat in real-world use.)
Specifications
(This section lists the key parameters for reference and project confirmation.)
| Parameter | Value |
|---|---|
| Power Supply | 95~240Vac, 50/60Hz |
| Power Consumption | Wifi 3W Max |
| Temperature Range | 5–95°C |
| Floor Limit Range | 20–90°C |
| Control Deviation | 0.5–10°C |
| Ambient Temperature | -5–50°C |
| Protection Level | IP20 |
| Material | Anti-Flammable PC |
Wiring
(Clear wiring references to help you complete the installation quickly and correctly.)
Guide
(This section explains what configuration the model code refers to.)
| Heating series | xx stands for |
|---|---|
| 703 | Water Heating, with NC+NO+COM output terminals |
| 716 | Electric Underfloor Heating, with L+N line voltage output terminals + External Sensor |
| 723 | Boiler Heating, with Non-Voltage Dry Contact |
| 723S | Boiler Heating, with Non-Voltage Dry Contact, Wi-fi, Modbus |
| Example HTW-WF81-723S: if xx = 723S, it stands for gas boiler heating with modbus support and Wi-Fi function. Most sub-models are ready-made. Kindly contact us to confirm availability. | |
Project Fit & Customization
(This section explains where the product can be used, its limits, and OEM/ODM options.)
This Smart Modbus Heating Thermostat is not suitable for high-power electric heating systems. It cannot switch large loads directly. It is not designed for complex industrial automation environments with advanced control requirements.
Despite these limits mentioned above, ODM customisation can still be discussed. Communication protocol or control logic may be adjusted. Our engineers will review project requirements before confirming feasible solutions.
OEM customisation is supported. Logo printing, colour selection, and label design can be provided. Packaging can also be customised. These options help adapt the Smart Modbus Heating Thermostat to different branding needs.
Certifications
Certification documents for Swan Controls thermostats
Exhibition Moments
Swan Controls presenting thermostats at an international HVAC exhibition
Frequently Asked Questions
Q1. What systems can this Smart Modbus Heating Thermostat control?
It is designed for water heating and gas boiler systems. It uses dry contact output to control heating equipment based on temperature settings.
Q2. Does it support Modbus communication?
Yes, it supports Modbus communication. This allows integration into building management systems for centralised monitoring and control.
Q3. Does it also support Wifi control?
Yes, the thermostat supports Wifi control. Users can adjust temperature and schedules remotely through a mobile application.
Q4. What is the minimum order quantity and are samples available?
We support sample orders. The usual MOQ is 300 units. Smaller quantities can also be discussed for testing and evaluation purposes.
Q5. How can I place an order?
Please contact us to confirm requirements. We will provide a proforma invoice. Payment supports TT, PayPal, Visa and terms like EXW, FOB, DAP.
Q6. How are the products shipped?
Express delivery usually takes about 7 days. Air freight takes similar time. Sea shipping normally takes about one month depending on destination.
Need Support?
If you need help selecting a Smart Modbus Heating Thermostat, please contact us. Our team can support your project and provide suitable solutions.
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