WT401 is a wireless thermostat defined by its split-unit design, delivering unparalleled installation flexibility. Its broad compatibility empowers you to bring intelligent, unified control to a diverse spectrum of HVAC systems.
Facing HVAC Hurdles?
Crush Them All with Wireless Smart Thermostat WT401
The Milesight Wireless Smart Thermostat transforms every obstacle into an opportunity for efficiency and control:
Wire-Free Flexibility
Powered by its split-unit design, enjoy wire-free installation in minutes, eliminating the cost and disruption of re-wiring for any retrofit project.
Optimal Placement for Comfort
Place the thermostat in the ideal spot for perfect comfort, no longer locked by wires, ensuring truly accurate environmental sensing.
Diverse Communication Options
Supports BLE, LoRaWAN®, and Powerbus, enabling seamless integration and stable communication across various deployment scenarios.
Broad Compatibility
Engineered to master a wide range of HVAC systems, with a special focus on PTACs, Mini Splits, and TRVs.
Intelligent Sensing
Leverage the built-in PIR sensor for automatic energy savings based on real-time occupancy.
Explore how the WT401 seamlessly integrates into your specific environment.
Residential
Centralized Room-by-Room Control
Effortless & Clean Upgrade
Precision Scheduling & Savings
Hotel
Retail
Residential
Effortless Wireless Upgrade
Automated Energy Savings
Enhanced Occupant Comfort
Intuitive User Interface
Centralized Remote Management
2.7-Inch E-Ink. Green Power,
Brilliant Clarity.
Five Large Buttons. Effortless &
Customizable Control.
Soft Backlight, Comfortable Nighttime
Operation (WT401-Flat-FL)
All-in-One Sensing. Temperature,
Humidity, Occupancy.
Minimize Privacy Concerns with Flat
Occupancy Sensor (WT401-Flat-FL)
Triple Power Options. Battery,
Type-C, or Powerbus.
Sliding Buckle. Simple Access for
Easy Maintenance.
Versatile Mounting. Perfect Fit with
Decorative Backplate.
Anti-Theft Screw. A Smart Detail for
Public Spaces.
Zero-Touch FUOTA Maintenance
Keep your thermostats secure and up-to-date with the latest features via FUOTA, eliminating the need for costly site visits.
Advanced Energy Strategy
Combines PIR occupancy detection with up to 8 customizable local schedules to create a powerful, automated climate control strategy.
Effortless Bulk Deployment
Use NFC for rapid, one-tap configuration, or pre-configure your entire fleet via the Milesight Development Platform.
Scalable Remote Management
Send commands to hundreds of devices at once using Multicast (Class C), perfect for making property-wide adjustments with a single click.
Milesight's Smart Thermostat Series are engineered to master any climate control challenge. From the
WT101 for individual radiators to the versatile WT201 and specialized WT30x for fan coil units, our ecosystem delivers unmatched
energy efficiency and occupant comfort through seamless LoRaWAN® connectivity.
WT101
Smart Radiator Thermostat
WT201
Smart Thermostat
WT30x
Smart Fan Coil Thermostat
| Thermostat Feature | |
|---|---|
| Compatibility | Work with most HVAC systems via LoRaWAN® Work with PTAC (2H/1C), AC & Furnaces (1H/1C) or Heat Pumps (2H/1C) via Milesight UC711 HVAC controllers Work with Common Air Conditioners or PTAC systems via Milesight UC7011AC controllers Work with Radiators via Milesight WT101/WT102 thermostat |
| Temperature Control Mode2 | Heat, EM (Emergency) Heat, Cool, Auto, Dehumidify, Ventilation |
| Fan Mode2 | Low, Medium, High, Auto, On, Circulate |
| Advanced Feature | Local Control Schedule |
| Sensor | |
| Temperature | |
| Operating Principle | Digital CMOSens® technology (MEMS) |
| Range | -20°C ~ 60°C |
| Accuracy | Typical ± 0.2°C, Maximum ± 0.5°C |
| Resolution | 0.1°C |
| Humidity | |
| Operating Principle | Digital CMOSens® technology (MEMS) |
| Range | 0% - 100% RH |
| Accuracy | Typical ± 2% RH, Maximum ± 5% RH |
| Resolution | 0.5% RH |
| Occupancy Detection | |
| Operating Principle | PIR |
| Detection Area | 120 ° Horizontal, 90 ° Vertical |
| Detection Distance | Maximum 6 m |
| Wireless Transmission | |
| Technology | LoRaWAN® |
| Antenna | Internal Antenna |
| Frequency | IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4 |
| Tx Power | 16dBm (868MHz)/22 dBm (915 MHz) |
| Sensitivity | -137dBm |
| Mode | OTAA/ABP Class A/Class C |
| Others | |
| Display | 2.7-inch Black&White E-ink Screen |
| Buttons | 5 Buttons for Power On/Off, Reset, System On/Off, Temperature Up/Down, Temperature Control Mode, Fan Mode, etc. |
| LED Indicator | 1 x Power/Reset Indicator |
| USB | 1 × Type-C for Power Supply or Console |
| Power Connector | 1 × 2-pin Power Terminal Connector (PowerBus)3 |
| Software | |
| Power On/Off | Button, Mobile App via NFC |
| Configuration | Mobile App via NFC or Bluetooth® 5.0, Downlink |
| Advanced Feature | Occupied Detection, Smart Display, Child Lock, Button Customization, External Sensor Mode, Multicast, FUOTA |
| Physical Characteristics | |
| Power Supply4 | 1. 2 × 2700 mAh ER14505 Li-SOCl2 Replaceable Batteries 2. 24V DC/AC by Power Connector 3. 5V DC by Type-C Port 4. Powerbus3 (24V DC) by Milesight UC711 Controller |
| Battery Life5 | LoRa Mode (10 min report interval): Class A: Around 5 years (SF7), Around 3 years (SF10) Class C: Around 25 days LoRa + BLE Mode (1440 min report interval + 2 min BLE transfer interval): Class A: Around 3.5 years Class C: Around 25 days |
| Operating Temperature | -20°C ~ 60°C (E-ink Screen: 0°C ~ 40°C) |
| Relative Humidity | 0% to 95% (non-condensing) |
| Ingress Protection | IP30 |
| Material & Color | PC + ABS (UL94 V0), White (Black Customizable) |
| Dimension | 86 × 86 × 24 mm |
| Installation | Wall Screw Mounting, 86mm Square or European 60mm Round Box Mounting, 118 or 120 Wall Box Mounting via Wall Plate Accessories |
| Approvals | |
| Regulatory | CE, FCC |
1: Milesight UC701 AC controller is under development.
2: The temperature control mode and fan mode are decided by the Milesight HVAC controller when WT401 is pairing with it.
3: The PowerBus connector is only used for power supply, communication feature is under development.
4: These power supply options can not be used at the same time.
5: The battery life is tested under laboratory conditions and for guideline purposes only.
| Thermostat Feature | |
|---|---|
| Compatibility | Work with most HVAC systems via LoRaWAN® Work with PTAC (2H/1C), AC & Furnaces (1H/1C) or Heat Pumps (2H/1C) via Milesight UC711 HVAC controllers Work with Common Air Conditioners or PTAC systems via Milesight UC7011AC controllers Work with Radiators via Milesight WT101/WT102 thermostat |
| Temperature Control Mode2 | Heat, EM (Emergency) Heat, Cool, Auto, Dehumidify, Ventilation |
| Fan Mode2 | Low, Medium, High, Auto, On, Circulate |
| Advanced Feature | Local Control Schedule |
| Sensor | |
| Temperature | |
| Operating Principle | Digital CMOSens® technology (MEMS) |
| Range | -20°C ~ 60°C |
| Accuracy | Typical ± 0.2°C, Maximum ± 0.5°C |
| Resolution | 0.1°C |
| Humidity | |
| Operating Principle | Digital CMOSens® technology (MEMS) |
| Range | 0% - 100% RH |
| Accuracy | Typical ± 2% RH, Maximum ± 5% RH |
| Resolution | 0.5% RH |
| Occupancy Detection | |
| Operating Principle | PIR |
| Detection Area | 120 ° Horizontal, 100 ° Vertical |
| Detection Distance | Maximum 7 m |
| Wireless Transmission | |
| Technology | LoRaWAN® |
| Antenna | Internal Antenna |
| Frequency | IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4 |
| Tx Power | 16dBm (868MHz)/22 dBm (915 MHz) |
| Sensitivity | -137dBm |
| Mode | OTAA/ABP Class A/Class C |
| Others | |
| Display | 2.7-inch Black&White E-ink Screen with Backlight |
| Buttons | 5 Buttons for Power On/Off, Reset, System On/Off, Temperature Up/Down, Temperature Control Mode, Fan Mode, etc. |
| LED Indicator | 1 x Power/Reset Indicator |
| USB | 1 × Type-C for Power Supply or Console |
| Power Connector | 1 × 2-pin Power Terminal Connector (PowerBus)3 |
| Software | |
| Power On/Off | Button, Mobile App via NFC |
| Configuration | Mobile App via NFC or Bluetooth® 5.0, Downlink |
| Advanced Feature | Occupied Detection, Smart Display, Child Lock, Button Customization, External Sensor Mode, Multicast, FUOTA |
| Physical Characteristics | |
| Power Supply4 | 1. 2 × 2700 mAh ER14505 Li-SOCl2 Replaceable Batteries 2. 24V DC/AC by Power Connector 3. 5V DC by Type-C Port 4. Powerbus3 (24V DC) by Milesight UC711 Controller |
| Battery Life5 | LoRa Mode (10 min report interval): Class A: Around 5 years (SF7), Around 3 years (SF10) Class C: Around 25 days LoRa + BLE Mode (1440 min report interval + 2 min BLE transfer interval): Class A: Around 3.5 years Class C: Around 25 days |
| Operating Temperature | -20°C ~ 60°C (E-ink Screen: 0°C ~ 40°C) |
| Relative Humidity | 0% to 95% (non-condensing) |
| Ingress Protection | IP30 |
| Material & Color | PC + ABS (UL94 V0), White (Black Customizable) |
| Dimension | 86 × 86 × 24 mm |
| Installation | Wall Screw Mounting, 86mm Square or European 60mm Round Box Mounting, 118 or 120 Wall Box Mounting via Wall Plate Accessories |
| Approvals | |
| Regulatory | CE, FCC |
1: Milesight UC701 AC controller is under development.
2: The temperature control mode and fan mode are decided by the Milesight HVAC controller when WT401 is pairing with it.
3: The PowerBus connector is only used for power supply, communication feature is under development.
4: These power supply options can not be used at the same time.
5: The battery life is tested under laboratory conditions and for guideline purposes only.
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