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WT101
WT102

WT10x
Smart Radiator Thermostat

WT10x Smart Radiator Thermostat enables immediate heating control via precise temperature monitoring. Available in battery-powered WT101 or self-powered WT102 models, it maximizes energy efficiency and drives significant cost savings.

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Upgrade to Smart, Precise Heating Control

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Traditional radiators lack precise valve regulation, causing overheating and temperature swings.

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The smart radiator thermostat offers more control over heating based on real-time temprature changes.

Surpassing traditional thermostats with fixed setpoints, Milesight Smart Radiator Thermostat WT10x delivers dynamic precision. By monitoring real-time room temperature, it automatically adjusts the valve opening to regulate the exact amount of hot water.

This smart mechanism ensures consistent comfort and superior energy efficiency.

Accurate Temperature Sensing

Built-in high-precision sensor enables accurate environmental detection for stable control.

Room-by-Room Control

Enable independent temperature
settings for specific zones or rooms.

Maximum Flow Regulation

Limit the maximum valve opening to control heat dissipation and avoid overheating.

Optimize Your Heating, Minimize Your Effort

Strategies for Zero Waste

Deploy Fast, Manage Remotely

WT102 Exclusive: The Self-Powered Innovation

Intuitive Use, Total Protection

Smart Schedule Planning

Supports up to 16 customized heating plans within a preset Date Period.

Automatically adjusts temperatures to match specific daily routines, achieving granular comfort and minimizing energy consumption.

Open Window Detection

Instantly halts heating by automatically closing the valve when a sudden temperature drop is detected, effectively preventing unnecessary energy waste during ventilation.

Automatic Freeze Protection

Valves open when temperatures reach low thresholds to safeguard pipes from freezing, effectively preventing costly emergency repairs.

wt10x features plans
wt10x features window detection
wt10x features freeze protection

Zero-Touch Maintenance via FUOTA

Centrally manage devices via bulk commands and keep features up-to-date with FUOTA firmware upgrades. It ensures continuous security updates and system optimization without the need for costly on-site maintenance visits.

One-Touch NFC Configuration

Power on/off and configure devices wirelessly by attaching your phone to the device via the Milesight ToolBox App.

wt10x features fuota
wt10x features nfc

Self-Powered, Maintenance-Free

Milesight WT102 utilizes thermal energy harvesting to avoid battery replacements forever, featuring Type-C charging for off-season reliability. Enjoy maintenance-free operation and significant labor cost savings.

Class B Instant Response

Supports LoRaWAN® Class B for quicker response. Whether receiving remote commands or linking with wall panels, the WT102 executes instantly and precisely—significantly boosting management efficiency and control convenience.

Rugged Metal Durability

Crafted with a robust metal housing to withstand physical impacts and collisions. Perfect for extending device lifespan in schools and public spaces.

WT101 vs WT102: Full Comparison>
wt102 features self powered
wt102 features lorawan class b
wt102 features metal housing

Interactive LED Display

Clear local visibility for real-time status and temperature checks.

Tamper-proof Child Lock

Manual changes won't take effect when the child lock is activated, ensuring heating stays on schedule.

Anti-theft Protection

Theft-deterring collar accessory locks the device to the valve, preventing unauthorized removal.

Universal Valve Compatibility

Different types of valve adapters are available to ensure high compatibility with various radiators like modern apartments, nursing homes, and commercial buildings.

Check Adapter Compatibility >
wt10x features led screen
wt10x features child lock
wt10x features anti theft protection
wt10x features valve adapaters

Elevate Heating Control via Connected Ecosystem

Unified HVAC Control via Smart Linkage
One-Stop Smart Building Solution
wt10x solution topology

Pair with WT401 to eliminate temperature deviations and access difficulties in corner installations. It also enables centralized control of multiple valves in a single zone, boosting operational efficiency.

  • Effortless Corner Access
  • Unified Zone Management
  • Wire-Free Flexibility
wt10x solution bg
wt10x solution products iaq series

IAQ Sensor

wt10x solution products door sensors

Magnetic Contact Switch

wt10x solution products wt10x

Smart Radiator Thermostat

Leverage the One-Stop Milesight LoRaWAN® Ecosystem. Seamlessly integrate with Gateways, Platforms, and environmental sensors to achieve holistic automation. For instance, link with Magnetic Contacts to stop heating when windows open, or sync with IAQ Sensors for precise, large-area climate management.

  • Holistic Automation
  • Standard Connectivity
  • One-Stop Solution
  • Centralized Management

Unlock Energy Efficiency Across Key Building Verticals
with WT10x Smart TRV

Hotels

Residential Buildings

Commercial Buildings

Hospitals

Schools

Smart TRV for Hotel HVAC Management

Guest rooms often experience fluctuating occupancy, making HVAC operation inefficient and energy-intensive.
WT10x thermostatic radiator valve enables real-time temperature monitoring and seamless integration with BMS and thermostats, supporting responsive climate adjustments.

  • Pre-heating & setback automation: Ensures valves pre-heat rooms before check-in and switch to setback mode at checkout, with no manual intervention

  • System integration: Supports coordinated HVAC control to balance guest comfort and operational efficiency

In Practice: Boutique Hotel in Italy

In a boutique mountain hotel in Italy, Milesight's smart heating solution enabled automated valve control based on booking schedules. It significantly reduced energy consumption in unoccupied rooms while ensuring rooms reached the target temperature before guest arrival.

Explore the Case Study
wt10x smart thermostat trv case5

Thermostatic Radiator Valve for Residential Buildings: Room-Level Heating Control

Apartment and multi-family heating systems often struggle with uneven temperature distribution, manual control inefficiencies, and energy waste in unoccupied units, leading to heating bills that no single resident can control or dispute.
WT10x enables real-time ambient temperature monitoring and integrates with radiator valves for precise, room-level control.

  • Autonomous protection mechanisms such as open-window detection and freeze protection reduce landlord liability and prevent energy waste in vacant flats

  • Regulatory compliance support helps meet EPBD requirements and enables individual heat cost allocator compliance

In Practice: Multi-Family Housing in Sweden

In Sweden, 340 WT101 smart radiator valves were deployed across townhouses and apartments to support EPBD compliance. The system enabled precise room-level temperature control and safer heating operations, helping property managers optimize energy usage while enhancing tenant comfort across multi-unit residences.

wt10x smart thermostat trv case4

Smart Radiator Thermostat for Office Buildings: BMS-integrated Heating Efficiency

Perimeter radiators in open-plan offices often overheat exterior zones while interior areas remain cold, driving simultaneous comfort complaints and unnecessary energy expenditure.
WT10x smart TRV provides real-time temperature feedback and integrates seamlessly with building management systems for more adaptive heating control.

  • BMS integration via BACnet, Modbus, and MQTT enables centralized monitoring and control

  • Occupancy-based heating aligns schedules with BMS occupancy data, automatically reducing heat output outside core business hours and during HVAC switchovers

In Practice: Office Retrofit Project in Germany

In Germany, a smart heating retrofit project upgraded legacy office buildings with 268 WT101 valves to meet the EPBD standards. Integrated with occupancy sensors and BMS, the solution enabled automated heating schedules around actual office hours, delivering measurable reductions in energy consumption with no disruption to occupants.

wt10x smart thermostat trv case3

Smart TRV for Healthcare Temperature Control & Clinical Environment Compliance

Ward and clinical area temperatures must remain within defined ranges for patient safety and regulatory compliance. Manual TRV adjustment by non-technical staff can undermine clinical environment standards and CEE energy audit requirements.
WT10x enables real-time temperature monitoring and centralized control, ensuring stable conditions across sensitive healthcare environments.

  • Child lock mode prevents unauthorized temperature adjustments at the device level, protecting clinical environment integrity.

  • 10-year battery life & FUOTA enable long-term compliance without accessing occupied clinical areas, reducing maintenance costs.

In Practice: Hospital HVAC Automation in Croatia

By deploying 114 units of WT101 Smart Radiator Thermostats, a Croatian hospital achieved rapid, non-invasive automation of ward temperatures. This centralized system enabled remote monitoring and custom heating schedules, slashing manual labor costs while optimizing energy efficiency through precise environmental control.

Explore the Case Study
wt10x smart thermostat trv case2

Smart TRV Heating Management for Schools & Education Facilities

Classroom & corridor heating environments are difficult to manage, as radiators are frequently tampered with by pupils and standard TRVs provide no audit trail, making compliance with school heating regulations hard to verify.
WT10x enables real-time temperature monitoring and centralized control, ensuring stable and compliant conditions across teaching spaces.

  • Anti-vandal design & child lock prevent unauthorized adjustments, ensuring consistent heating performance and regulatory compliance

  • Timetable-aligned heating plans (up to 16 per period) match school schedules—full output during lessons, setback during breaks, and frost protection during nights and holiday periods for predictable energy usage

In Practice: School Heating Project in Italy

In Italy, 100 WT101 smart TRVs were deployed in a school to enhance heating safety and efficiency. The solution combined anti-theft design, long battery life, and preset heating plans to deliver reliable temperature control, reduce maintenance needs, and create a comfortable learning environment for students and staff.

wt10x smart thermostat trv case1

Seamless Integration & Scalable Deployment

Milesight enables efficient integration, rapid deployment, and scalable operation across building IoT projects,
helping simplify system architecture while accelerating project delivery.

  • BMS Integration & Open Protocols

    Supports BACnet over LoRaWAN® along with BACnet, Modbus, and MQTT, enabling smooth data exchange and easy integration into existing building systems

  • Fast Deployment & Centralized Management

    Plug-and-play setup, bulk configuration, and centralized control reduce on-site effort and streamline commissioning across multiple devices and locations

  • Flexible Architecture for Retrofit & Complex Environments

    LoRaWAN® complements existing networks, making it ideal for large-scale retrofits and hard-to-wire environments without major infrastructure changes

wt10x smart thermostat trv bms

Related Resources

wt10x related resources blog 1

WT102:Stop Paying the "Battery Tax" on Large Scale HVAC

Blog
Learn More
wt10x related resources blog 2

WT102:The Engineering Behind Its Self-Powered Reliability

Blog
Learn More
wt10x related resources solution

Milesight Energy-Efficient Smart HVAC Solutions

Solution
Learn More

Climate Crafted, Comfort Controlled

Expand your climate management beyond radiators. Milesight's smart thermostat ecosystem integrates the WT201
for furnaces and heat pumps, the WT30x for fan coil units, and the WT401 for unmatched flexibility with its split-unit
design. Together with WT10x, they deliver unified control and energy efficiency via LoRaWAN®.

wt201 smart thermostat

WT201

Smart Thermostat

  • LoRaWAN® Wireless Deployment
  • Seamlessly Matching HVAC System
  • Strong Compatible Connectivity (BACnet and More)
  • 4 Customizable Temperature Control and 3 Fan Modes
wt30x smart fan coil thermostat

WT30x

Smart Fan Coil Thermostat

  • Compatible with 2-Pipe/4-Pipe FCU
  • Supports 8 Custom Schedules
  • 3 Temperature Control Modes, 4 Fan Modes
  • Compact Size Design with Easy Installation
wt10x related products wt401

WT401

Wireless Smart Thermostat

  • Wire-Free Installation via Split-Unit Design
  • Built-In Temperature, Humidity, and PIR Sensors
  • Up to 8 Programmable Temperature Plans
  • Effortless Remote Updates via FUOTA

FAQs

Q: Is the WT10x compliant with relevant EU regulations and certifications?

Yes. The WT10x carries CE marking and complies with the EU Radio Equipment Directive (RED) and RoHS Directive. Beyond product-level certifications, the WT10x is also designed to help buildings meet the EU Energy Performance of Buildings Directive (EPBD), which requires individual room-level temperature control and energy monitoring in new and renovated buildings. By enabling precise per-radiator scheduling, remote control, and energy usage visibility, the WT10x gives building owners and facility managers a practical path to EPBD compliance without costly infrastructure changes.

Q: How simple is WT10x installation?

Very easy. The WT10x is designed for tool-free, drain-free installation that takes under 5 minutes per radiator. It simply clicks onto your existing valve body (compatible with M30 × 1.5 and other common valve types via included adapters), no pipework, no specialist knowledge, and no disruption to your heating system required.

Q: Why does the WT10x use LoRaWAN® instead of a proprietary protocol?

LoRaWAN® offers several key advantages for building-scale deployments: long range (a single gateway can cover an entire multi-story building or campus), ultra-low power consumption for extended battery life, and an open standard that avoids vendor lock-in. It is purpose-built for IoT sensor networks where reliable, low-bandwidth communication over distance matters more than streaming speed.

Further Reading: What Is LoRaWAN®?

Q: What is the difference between a LoRaWAN® TRV, a Wi-Fi TRV, and a Zigbee TRV? Which should I choose?

LoRaWAN® TRV (WT10x)Wi-Fi TRVZigbee TRV
RangeUp to several hundred metres; penetrates thick walls and floorsLimited to Wi-Fi router range (~10–30 m indoors)Short range (~10–20 m), requires mesh or coordinator nearby
Battery lifeSeveral years (typically 5–8 yr)Months (high power draw)1–2 years
Network dependencyLoRaWAN® gateway; no home Wi-Fi neededRelies on building Wi-Fi infrastructureRequires Zigbee hub/coordinator
Best suited forLarge buildings, hotels, multi-unit residential, campusesSingle apartments, consumer smart homeSmall deployments already using a Zigbee ecosystem
ScalabilityHigh — hundreds of devices per gatewayLow — each device adds load to Wi-FiMedium — limited by coordinator capacity
Vendor lock-inOpen standard (LoRa Alliance)Often proprietary cloudPartially open (Zigbee Alliance), but hub-dependent

Compared to Wi-Fi and Zigbee, LoRaWAN® offers superior range, longer battery life, and easier scalability, making it the preferred choice for large-scale building deployments.

Specifications

Wireless Transmission
ProtocolLoRaWAN®
FrequencyIN865/RU864/EU868
Tx Power16 dBm (868 MHz)
Sensitivity-137dBm
ModeOTAA/ABP Class A
Valve Control
ActuatorStepping Motor
Default Valve FittingM30 ×1.5 mm
Optional AdaptersRA, RAV, RAVL, Giacomini, M28 (Comap, Herz, TA)
Advanced FeatureAutomatic Temperature Control, Valve Opening Control, Heat Plans, Freeze Protection, Open-window Detection, Tamper Alarm, Effective Stroke
Temperature Sensor
Sensor TypeNTC
Range-20°C ~ 60°C
Accuracy± 0.5°C (0°C ~ 50°C)
Resolution0.1°C
Others
DisplayLED Display with White Light
Button1 × Control Knob, 1 × Calibration & Tamper Button (Internal), 1 × Reset Button (Internal)
Software
ConfigurationNFC via Mobile App or Downlink
Advanced FeatureChild Lock, External Sensor Mode, FUOTA
Physical Characteristics
Power Supply2 x 1.5V Li-FeS2 AA Replaceable Batteries (3000 mAh in Total)
Battery Life*Around 8 Years (SF7, EU868)
Around 5 Years (SF10, EU868)
(10 min Interval + Control Once during 5-month Heating Season, 25°C)
Operating Temperature-20°C ~ +60°C
Storage Temperature-40°C ~ +70°C (Without Batteries)
Relative Humidity0% - 95% (Non-condensing)
Ingress ProtectionIP30
Weight170g (With Batteries)
DimensionΦ 52*90mm (Φ 2.05 * 3.54in)
Material & ColorStainless+ABS, White
InstallationLatching on the Valve
Approvals
RegulatoryCE
EnvironmentalRoHS

* Tested under laboratory conditions and for guideline purposes only.

Wireless Transmission
ProtocolLoRaWAN®
FrequencyIN865/RU864/EU868
Tx Power16 dBm (868 MHz)
Sensitivity-137dBm
ModeOTAA/ABP, Class A/Class B
Valve Control
ActuatorStepping Motor
Default Valve FittingM30 ×1.5 mm
Supported Metal AdaptersRA, RAV, RAVL, Giacomini, M28 (Comap, Herz, TA, Markaryd)
(Customizable)
Advanced FeatureAutomatic Temperature Control, Valve Opening Control, Heating Plans, Freeze Protection, Open-Window Detection, Effective Stroke
Temperature Sensor
Sensor TypeNTC
Range-20°C ~ 60°C
Accuracy± 0.5°C (0°C ~ 50°C)
Resolution0.1°C
Others
DisplayLED Display with White Light
Buttons1 × Power/Reset Button, 2 × Temperature/Valve Opening Control Buttons
USB1 × Type-C for Power Supply, Charging or External NTC Sensor Connection
Software
ConfigurationNFC via Mobile App or Downlink
Advanced FeatureChild Lock, External Sensor Mode, Data Storage (1,000 Entries), Data Retransmission, Data Retrievability, Multicast, FUOTA
Physical Characteristics
Power Supply1. Self-powered by temperature difference1
2. 5V by USB Type-C Port
Operating Temperature-20°C ~ 60°C
Relative Humidity0% - 95% (Non-condensing)
Ingress ProtectionIP30
Dimension50 × 60 × 101.9 mm
Material & ColorPC +Aluminum, White & Silver
InstallationLatching on the Valve

1.When the water temperature exceeds 45°C, the device is powered via the thermoelectric effect.

TRA3015 M30 X 1.5 mm Valve Adapter Kits

Optional

  • Size: 30 x 1.5mm
  • Applicable Products:WT101
  • Adapter Valve Types:Danfoss: RA, RAVL, RAV / Giacomini: GIA / Standard Thread: M28 x 1.5

    TRC01 Plastic Protective Anti-vandal Cover for Thermostat Radiator

    Customizable

    • Size:⌀ 67 ×95 mm
    • Material:Plastic
    • Applicable Products:WT101

      Theft-Deterrent Collar

      • Material:Metal
      • Applicable Products:WT101/WT102

        TRC011 Plastic Protective Anti-vandal Cover for Thermostat Radiator

        Customizable

        • Size:70.4 × 105.4 × 60.4 mm
        • Material:Plastic
        • Applicable Porducts:WT102

          NS102585-105-11 USB-C Negative Temperature Coefficient Sensor

          Optional

          • Maximum Temperature Range:105℃
          • Resistance (25°C):10kΩ ± 1%
          • B-Constant (25/85°C):2585K ± 1%
          • Cable Length:1m
          • Applicable Products:WT102

            Metal Valve Adapter

            Optional

            • Material:Metal
            • Applicable Products:WT101/WT102
            • Adapter Valve Types:RA, RAV, RAVL, Giacomini,Herz, Comap, TA, markaryd (Other types of adapters available upon request)

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