FLOW PRO
The smart thermostatic head designed for multi-unit buildings
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Connected
Quick setup via NFC from a smartphone
Remote control and monitoring via a LoRaWAN wireless network -
Enhanced durability
RUG mounting base with metal inserts
Designed for the most demanding environments: schools, hospitals, and multi-unit housing -
High-performance battery
Up to 12 years of battery life*
Runs on 4 replaceable lithium batteries
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Hot Water
Radiator -
LoRaWAN
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L2D1
LoRaWAN Heating Control for Commercial Buildings
FLOW PRO combines local control, battery power, remote software updates, and centralized monitoring to manage heating on a large scale.
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Reduces overheating through room-by-room control and scheduled setpoints
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With 4 professional lithium batteries to reduce maintenance costs and on-site interventions
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Comfort, Eco, Frost Protection and Away modes to optimise energy consumption
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Reinforced RUG mounting base with metal inserts, suitable for intensive use
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Thermostatic head adjustment in 0.5°C increments and NODE* remote sensor to measure the actual room temperature
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Schedules stored in memory to continue controlling heating, even without the LoRaWAN network
FLOW PRO: LoRaWAN Thermostatic Radiator Valve for Smart Building Heating
FLOW PRO is a LoRaWAN thermostatic radiator valve (TRV) designed for room-by-room heating control in multi-unit and commercial buildings. It combines local regulation, BMS integration, remote monitoring, NFC configuration and long battery life in a single device.
NODE: Measuring Temperature in the Right Place
The temperature measured at the radiator may be affected by convection, exposure to sunlight, a curtain, or a draft.
FLOW PRO relies on the NODE** remote temperature sensor, which is ideally positioned in the room to measure a temperature that accurately reflects actual conditions, significantly improve control quality, and ensure occupant comfort.
The temperature is measured automatically every 10 minutes to adjust the control system more precisely and maintain a stable temperature over time.
NODE has been issued a calibration certificate by an independent COFRAC-accredited metrology laboratory to ensure reliable control that meets the requirements for commercial buildings.
Continuously adjustable heating, even without the
cloud or a wireless connection
FLOW PRO stores its heating schedules locally. The LoRaWAN thermostatic head therefore continues to regulate the heating even if network connectivity is temporarily unavailable.
The wireless network and the cloud are used to monitor, update settings, and report relevant information. It is not necessary to control each valve in real time.
Adjusting the temperature in 0.5 °C increments allows for finer tuning of the setpoint and improves room-by-room heating control.
Quick TRV installation and NFC configuration
FLOW PRO can be configured locally via contactless NFC technology using a smartphone, or remotely via the LoRaWAN radio network. This dual-approach simplifies installation and speeds up commissioning.
For a large fleet, parameters, schedules, and equipment can be configured at the branch office to reduce the time spent on-site during installation.
FLOW PRO is suitable for both renovation projects and multi-site deployments, with phased installation by building, zone, or equipment fleet.
Remote LoRaWAN firmware updates with FUOTA
FLOW PRO can receive software updates remotely via the LoRaWAN network.
The installed base thus benefits from security patches, improvements, and new features without the need for routine on-site intervention.
The software update extends the operational life of FLOW PRO for many years and simplifies maintenance for large-scale deployments.
This feature can leverage NAVIXIS, Nexelec’s IoT monitoring software, and its LoRaWAN gateways; featuring a tested and proven end-to-end FUOTA V2 LoRaWAN update pipeline: firmware preparation, network distribution, deployment tracking, and fleet status monitoring.
Up to 12 years of battery life, without relying on cutting-edge technology
Powered by four professional-grade lithium batteries—tested and validated by Nexelec—the FLOW PRO’s power supply relies on proven, stable, and predictable technology.
The battery life of the LoRaWAN thermostatic head does not depend on a Peltier-effect energy recovery system, whose performance can vary depending on the actual heating conditions of the radiator, the temperature difference, and the aging of the rechargeable battery.
A simple, robust, and fully controlled approach for multi-unit buildings.
Reduced maintenance for large TRV deployments
The cost of a LoRaWAN-connected thermostatic head is not limited to its purchase price.
Battery replacements, malfunctions, and service calls have a significant impact on total operating costs.
Battery monitoring tracks energy levels and activates a red indicator light to help anticipate maintenance needs.
With its long battery life, anti-seizing function, open-window detection, manual lock, and remote software updates, FLOW PRO significantly reduces service calls and helps maintain service quality.
BMS and Building-Wide heating monitoring
With the NAVIXIS IoT monitoring software, FLOW PRO can be fully operated remotely.
The web platform allows users to control setpoints, monitor equipment, manage schedules, and analyze the consistency of the control system.
For building managers, NAVIXIS provides a clear overview of the building fleet and facilitates long-term energy optimization.
Safety, Protection, and Community Use
FLOW PRO is designed for use in multi-unit buildings. Its lockable base with a secure screw prevents unauthorized removal, while the anti-tamper detection feature helps identify on-site anomalies.
For more exposed environments, the transparent CASE** outer shell provides enhanced protection against impacts, tampering, and attempts to disassemble the device.
Specifications
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Temperature
Resolution: 0.1°C
Accuracy: ±0.4°C
Features
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Connectivity
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Power supply
4 AA 1.5V lithium batteries
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Dimensions
91 x 58 mm
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Terms of use
Indoor environment
Temperature: -20°C to +60°C
Humidity: 0% RH to 99% RH (non-condensing)
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Radiator Interface
M30 x 1.5 mm
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Warranty
2 years*
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Certifications
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Set contents
1 FLOW PRO thermostatic radiator valve with reinforced RUG mounting base
5 colored labeling tabs
1 anti-theft screw
4 Energizer Ultimate Lithium AA batteries
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Actuator
Stepper motor with micrometric positioning
Reference
| Reference | Radio |
|---|---|
| A310LS | LoRaWAN |
A LoRaWAN TRV for Multi-Unit and commercial buildings
Control heating room by room with a solution that’s simple to deploy and suited to renovation projects.
Adjust temperature settings according to room occupancy to reduce unnecessary energy consumption.
Schedule temperatures according to operating hours, zones and periods of non-occupancy.
Reduce local adjustments with control locking and remote monitoring.
Maintain a stable temperature in occupied areas while reducing technical interventions.
ADAPT: A system compatible with most radiators
The ADAPT kit includes a set of 6 adapters that make it easy to install the FLOW PRO thermostatic head on the most common thermostatic valves on the market. It allows you to quickly adapt the product to existing setups without having to replace the valve body every time.
Compatible with multiple valve standards, ADAPT simplifies retrofit installations, reduces on-site surprises, and helps keep installation costs under control.
Compatible models include: Danfoss RA valves, Danfoss RAV valves, Danfoss RAVL valves, Cale valves, Giacomini valves, and M28 valves.
CASE: Protecting the thermostatic head in a communal setting
The CASE protective cover enhances the thermostatic head’s mechanical protection against impacts, unauthorized tampering, and attempts to disassemble it.
The protective cover restricts access to the adjustment knob to prevent local changes to the setpoint, while helping to reduce damage, replacements, and on-site maintenance visits.
Superior performance for optimal LoRaWAN data transmission
No more data loss!
Historical Data Mode + Redundancy Feature: Measurements and statuses can be grouped into a single LoRaWAN frame to limit the number of radio transmissions and are sent three times to maximize the likelihood of successful reception by the network gateway.
Optimized radio antenna
Designed to ensure reliable radio connectivity, even in harsh environments, while minimizing the thermostatic head’s power consumption to extend its battery life.
Enhanced cyber security
The data transmitted by the product is secured end-to-end using AES-128 double encryption.
A thermostatic head built to last
Nexelec’s commitment to more responsible electronics is part of a structured CSR approach, as recognized by the company’s award of the EcoVadis Bronze medal.
FLOW PRO was designed with this approach in mind: sustainable design, replaceable batteries, remote maintenance, software updates via LoRaWAN, and removable accessories all help extend the product’s lifespan and minimize the need for on-site service calls.
The FLOW PRO thermostatic head was also designed to facilitate maintenance, the replacement of wear parts, and end-of-life disposal, in line with eco-design principles and the goal of reducing environmental impact.
FLOW PRO for UK and Ireland Building Projects
FLOW PRO is designed for heating control projects in commercial buildings across the UK and Ireland, including both new installations and retrofit heating applications. Compatible with hot-water radiator systems, it enables room-by-room temperature control while supporting large-scale LoRaWAN deployments. Its connectivity also facilitates BMS integration, allowing heating data, settings and alerts to be incorporated into wider building management strategies.
FLOW PRO is particularly suited to multi-unit buildings, hotels, schools, healthcare facilities, offices and public buildings where reliable heating control, remote supervision and reduced maintenance are key project requirements.
Frequently Asked Questions
Our experts answer your questions
A LoRaWAN thermostatic radiator valve (TRV) controls the flow of hot water through a radiator to regulate room temperature. Using LoRaWAN connectivity, it can transmit data and receive settings remotely, making it suitable for room-by-room heating control and centralised management across large residential or commercial buildings.
Yes. FLOW PRO is designed for multi-unit and commercial buildings where heating needs to be controlled and monitored at scale. It is suitable for applications such as hotels, schools, healthcare facilities, offices, public buildings and multi-unit housing, with room-by-room control and remote supervision.
Yes. FLOW PRO uses LoRaWAN communication and can be integrated into a Building Management System (BMS) through a compatible LoRaWAN gateway and building automation infrastructure. This enables heating data, settings and alerts to be incorporated into wider building management and energy monitoring systems.
Yes. FLOW PRO can continue regulating the radiator even if the LoRaWAN connection is temporarily unavailable. Heating schedules and control settings are stored locally in the device, allowing room-by-room regulation to continue independently. LoRaWAN connectivity is used for remote monitoring, configuration, alerts and data transmission.
FLOW PRO is designed to provide 12 years of battery life under real operating conditions. It is powered by four replaceable AA lithium batteries. Its long battery life is particularly suited to large building deployments, where reducing battery replacements helps limit maintenance requirements and operational disruption.
Yes. FLOW PRO can be fitted to many existing hot-water radiators. It uses a standard M30 × 1.5 connection and can also be installed on other valve types using compatible ADAPT accessories, including adapters for common radiator valve manufacturers such as Danfoss, Giacomini and Caleffi.
* Battery life is not guaranteed and may vary depending on the product’s settings and usage.
** Optional accessory.