Smart Fan Coil Thermostat WT303 & WT304
The Smart Fan Coil Thermostat WT303 & WT304 series is a wireless LoRaWAN-enabled climate control room solution compatible with 2-pipe and 4-pipe fan coil units. Featuring an ultra-low-power 2.7-inch E-Ink display, integrated temperature and humidity sensors, and granular local programming, it delivers efficient HVAC optimization and automated environmental control across commercial and residential structures.
Key Highlights
- Advanced 2-Pipe & 4-Pipe Compatibility: Designed to seamlessly handle both 2-pipe and 4-pipe fan coil configurations.
- Energy-Efficient 2.7-Inch E-Ink Display: Delivers continuous, eye-friendly, and clear visibility of real-time temperature, humidity, and operational status at low power levels.
- Comprehensive Fan Control: Supports robust operations with 3-speed fans as well as advanced ECM (0-10V) fan configurations.
- Granular Local Scheduling: Allows up to 8 custom plans with 16 configurable time schedules per plan to maximize localized energy savings.
- Multi-Source Environmental Sensing: Continuously captures ambient conditions via embedded sensors or integrated external NTC temperature probes.
Product Overview
The WT303 & WT304 Smart Fan Coil Thermostats are intelligent LoRaWAN®-enabled HVAC controllers designed to provide accurate temperature management, energy optimization, and enhanced indoor comfort. Engineered for 2-pipe and 4-pipe Fan Coil Unit (FCU) systems, they support both 3-speed AC fans and ECM fans, making them suitable for a wide range of heating and cooling applications.
Featuring a modern interface, flexible control options, and seamless integration with Building Management Systems (BMS), the thermostats enable efficient monitoring and automation of indoor environments. Their wireless LoRaWAN® connectivity reduces installation complexity while ensuring reliable long-range communication.
The WT303 & WT304 are ideal for office buildings, hotels, apartments, retail stores, hospitals, and other smart building projects where comfort, operational efficiency, and energy savings are essential. By intelligently controlling fan speed and valve operation, these thermostats help maintain a comfortable environment while reducing overall HVAC energy consumption.
Key Features & Capabilities
Enterprise-grade technology designed for mission-critical operations
High-Flexibility FCU Integration
Seamlessly operates with 2-pipe and 4-pipe configurations using localized control logic to match diverse HVAC architectural needs.
Eco-Friendly Clear Display
Features a crisp 2.7-inch e-ink layout that continuously conveys live ambient metrics while maintaining strict ultra-low power metrics.
Granular Operational Planning
Supports 8 independent target plans featuring up to 16 time slots each for tailored heating and cooling runtime reductions.
Comprehensive Hazard Avoidance
Integrates intelligent open-window structural temperature drops and automated freeze prevention behaviors to eliminate thermal waste.
Multi-Signal Input Adaptability
Built with localized dry contact connections for keycard automation and an external 10k NTC probe terminal for multi-zone monitoring.
Technical Specifications
Key technical details and performance specifications
| Specification | Details |
|---|---|
| Product Type | Smart Fan Coil Thermostat |
| Display Type | 2.7-Inch Black & White E-Ink Screen |
| Temperature Measurement Range | -20°C ~ 60°C |
| Temperature Accuracy | ± 0.5°C between 0°C and 60°C |
| Humidity Range | 0% to 100% RH with ± 2% Typical Accuracy |
| Data Transmission Protocols | LoRaWAN® and Device-to-Device (D2D) |
| Power Source Supply | 100 to 240 VAC at 50/60Hz |
| Power Consumption Baseline | Less than 2W without load |
| Physical Relays Rating | Resistance 4A / Inductive 3A |
| Target Control Limits | 5°C to 35°C |
| System Operational Settings | Heat, Cool, Ventilation |
| Fan Operational Settings | Low, Medium, High, Auto |
| Hardware Interface Terminal | 1 x NTC Input and 1 x DI Dry Contact |
| Enclosure Material | White PC + ABS UL94 V0 Flame Retardant |
| Physical Dimensions | 86 x 86 x 42 mm |
| Ingress Protection Class | IP20 |
| Installation Options | 86mm Square Box, European 60mm Round Box, or 118/120mm Box via plate |
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