End-to-End Solutions to Optimize HVAC System Performance

For over 50 years, LACROIX has been developing innovative solutions to support building and industrial operators in the intelligent and sustainable management of HVAC systems (Heating, Ventilation, and Air Conditioning).

Our integrated offering — IoT sensors, SOFREL telecontrollers, and supervisory platforms — enables the collection, control, and valorization of installation data, improving performance, optimizing energy consumption, and ensuring reliable operation under all circumstances.

Robust, scalable, and easy to deploy, our technologies adapt to the needs of operators and help meet the challenges of energy efficiency and the digital transition of infrastructures.

With LACROIX, benefit from end-to-end solutions to monitor, control, and optimize your HVAC networks securely.


A complete solution for the monitoring, regulation, and performance management of HVAC systems and district heating networks

SOFREL S4TH and B4TH Controllers

Designed for managing HVAC systems, the connected SOFREL S4TH and B4TH controllers allow continuous operation control, performance monitoring, anomaly detection, and automation of technical equipment.

The B4TH enhances the S4TH experience by directly integrating the BACnet IP protocol, now a standard in Building Management Systems (BMS). This evolution ensures simplified deployment and improved compatibility with modern infrastructures.

With SOFREL controllers, operators have a complete tool to remotely manage their installations, control motors, pumps, or valves, and optimize their building’s energy performance.


IoT Sensors and LoRaWAN Gateway

We offer LoRaWAN IoT sensors and probes to monitor CO2, temperature and humidity levels in industrial, public, collective, and tertiary buildings.
A LoRaWAN IoT gateway enables the creation of a private network for seamless communication with S4TH remote controllers.


SOFREL LX SCADA HVAC

Integrated Platforms for the Centralization and Supervision of HVAC Systems

Our LX SCADA and LX CONNECT solutions are dedicated to the centralization and supervision of HVAC system networks.

The LX SCADA supervisor ensures efficient and optimized management through remote monitoring of equipment, operational data analysis, and real-time alert management.

The LX CONNECT platform centralizes the management of equipment and users, orchestrates cybersecurity, and provides a 360° view of the deployed fleet.

Together, these solutions offer smooth, secure, and intuitive management for the remote operation of Heating, Ventilation, and Air Conditioning systems.


Centralization, Gateways, and Communication Servers

The management of HVAC networks relies on the centralization of data from various installations. Our data communication solutions link on-site equipment to supervisory platforms.

We offer a complete ecosystem of gateways and communication servers, designed to ensure the reliability and security of information exchanges.


Our RTUs are compatible with most SCADA systems on the market. Discover our compatibility list.