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Building Management System BMS - building automation

Building Management System BMS – Comprehensive Solutions for Automation and Integration

A Building Management System (BMS) is a centralized platform that enables intelligent monitoring and control of building infrastructure, such as HVAC, lighting, access, and energy. To ensure smooth data exchange and automation across different technologies, a BMS requires specialized converters, communication modules, and industrial networking equipment. At CONSTEEL, we offer a full range of industrial-grade solutions to support efficient, reliable, and scalable BMS deployments.

M-Bus Converters – Integrating Energy and Water Meters

M-Bus to Modbus converters enable BMS platforms to retrieve real-time readings from thermal, electric, gas, and water meters. They are essential for accurate energy monitoring, cost allocation, and integration with building analytics systems.

DALI Converters – Smart Lighting Management

DALI converters support the integration of lighting systems into the BMS architecture. They offer advanced control over individual luminaires, groups, and scenes. These devices help reduce energy costs and enhance occupant comfort through automation.

BACnet, Modbus, KNX Converters – Multi-Protocol Communication

Our protocol converters bridge communication between BACnet IP, Modbus RTU/TCP, and KNX systems. They are key components for linking HVAC units, lighting controls, fire systems, and access control into a unified BMS dashboard.

AC Communication Modules – BMS Control for Air Conditioning

Specialized communication modules allow direct integration of split units and VRF/VRV air conditioners (Daikin, LG, Mitsubishi, etc.) into BMS networks. These devices enable centralized temperature, mode, and schedule control across all zones.

I/O Modules – Digital and Analog Signal Handling

Input/output modules expand the control capabilities of your BMS. They collect signals from sensors and switches, and control actuators, fans, relays, or dampers. Ideal for HVAC, alarm, shading, and access control systems.

Industrial Switches – Reliable Ethernet Networks

Our industrial-grade Ethernet switches are designed for high-performance BMS networks. They feature wide temperature ranges, redundant power supply, VLAN, QoS, and ring redundancy support – ensuring network stability in harsh environments.

Serial Device Servers – Integration of RS232/RS485 Devices

Serial servers allow legacy devices with RS232 or RS485 interfaces to communicate over IP-based BMS platforms. Perfect for extending the life and connectivity of meters, controllers, and older field devices.

Fiber Media Converters – Long-Distance Communication

Fiber media converters provide reliable data transmission over long distances and ensure electromagnetic interference resistance. Crucial in large buildings, campuses, and industrial areas where wired Ethernet cannot reach.

Frequently Asked Questions (FAQ)

What is a Building Management System?
A BMS is an integrated platform that enables the automated control and monitoring of building systems, such as HVAC, lighting, and power distribution, improving comfort, energy efficiency, and operational safety.

Why are protocol converters necessary in BMS?
They ensure compatibility between devices using different communication standards. This enables centralized control and expands integration across building technologies from various manufacturers.

Which devices can be integrated into a BMS?
HVAC units, lighting systems, power meters, access control, fire alarms, and other building subsystems – using converters, I/O modules, and network equipment.

Is BMS suitable for industrial environments?
Yes – with our robust industrial solutions such as Ethernet switches and serial servers, BMS platforms can operate reliably even in harsh industrial conditions.

Explore our full product offering to build a powerful and future-proof Building Management System. Our team is ready to assist you with technical support and custom-tailored solutions.


HD67038-25-A1 HD67038-25-A1
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67038-25-A1
RS-232/485 on Ethernet - Converter, housing type A (slim), DIN rail mount. Configuration:Thanks to the SW67038 software on your PC you can:Define the parameters of Ethernet lineDefine the parameters of Serial lineUpdate the deviceCharacteristics:Triple isolation between RS232/485 - Power Supply, RS232/485 - Ethernet, Power Supply - EthernetTwo-directional information between RS232/485 bus and Ethernet busMountable on 35mm DIN RailAuto-sensing Eth..
770.80 zł
HD67038-25-B2
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67038-25-B2
RS-232/485 on Ethernet - Converter, housing type B (wide), DIN rail mount. Configuration:Thanks to the SW67038 software on your PC you can:Define the parameters of Ethernet lineDefine the parameters of Serial lineUpdate the deviceCharacteristics:Triple isolation between RS232/485 - Power Supply, RS232/485 - Ethernet, Power Supply - EthernetTwo-directional information between RS232/485 bus and Ethernet busMountable on 35mm DIN RailAuto-sensing Eth..
770.80 zł
HD67115-A1
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67115-A1
RS-232 (DB9) to RS-422 (5-pin terminal block) converter, housing type A (slim), DIN rail mount. HD67115-A1 is a fully transparent RS232 / RS422 Converter that allows you to interface a RS232 network with a RS422 network. It has two-directional information between RS232 bus and RS422 bus.Configuration:Thanks to the SW67115 software on your PC you can:Define the parameters of RS232 lineDefine the parameters of RS422 lineUpdate the deviceCharacteris..
770.80 zł
HD67116-A1
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67116-A1
RS-485 (3-pin terminal block) to RS-422 (5-pin terminal block), housing type A (slim), DIN rail mount. HD67116 is a fully transparent RS485 / RS422 Converter that allows you to interface a RS485 network with a RS422 network.Configuration:Thanks to the SW67116 software on your PC you can:Define the parameters of RS485 lineDefine the parameters of RS422 lineUpdate the deviceCharacteristics:Triple isolation between RS485 - Power Supply, RS485 – RS4..
770.80 zł
HD67118 HD67118
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67118
Industrial RS-232 (DB9) to RS-485 (3-pin terminal block) converter, housing type A (slim), DIN rail mount. Specifications:Ports: 1x RS-485; 1x RS-232RS-485 Connector: Terminal blockRS-232 Connector: D-SUB 9Data Rates Serial RS-232/RS-485: Up to 115 KbpsPower supply: 10~19AC; 10~35VDCOperating temperature: -40°C/+85°C (-40°F/+185°F)Dimensions: 120 mm x 23 mm x 107 mm (DxWxH)Weight: 200g approxMechanical fixing: DIN Rail mountORDER CODE: HD67118Man..
770.80 zł
HD67149-A1
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67149-A1
Isolated RS-485 signal repeater, housing type A (slim), DIN rail mount. This product is suitable for solving various problems of a RS485 line, extensions of the line, increasing the nodes number, galvanic isolation, to get a strong protection from the sparks noise and electrostatic charges or simply to change the baud rate of the communication. Suitable for Modbus, BACnet MS/TP protocols and every other protocol that used RS485 like transmission ..
770.80 zł
HD67825-KNX-E-B2 HD67825-KNX-E-B2
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67825-KNX-E-B2
Industrial Ethernet to KNX TP converter, housing type B (wide), DIN rail mount. Converter allow to manage KNX devices through computer's LAN port, support protocol tunneling, adressing, parametrization, visualization and diagnosis of the KNX devices through ETS software. HD67825-KNX-E-B2 allows to access to the KNX network locally or remotely thanks to a simple LAN connection.Configuration:Thanks to the SW67825 software on your PC you can:Define ..
770.80 zł
I-7045 CR I-7045 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-7045 CR
16-channel Isolated Digital Output Module using the DCON Protocol. All modules in the 7045 series offer 16 digital output channels, each of which features Photocouple isolation. The I-7045(D)/M-7045(D) supports sourcetype output, while the I-7045(D)-NPN/M-7045(D)-NPN supports sink-type, and both are equipped with short circuit protection. There are options to enable both power-on and safe values, and 16 LED indicators that can be used to monitor ..
770.80 zł
I-7045-NPN CR I-7045-NPN CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-7045-NPN CR
16-channel Isolated Digital Output Module using the DCON Protocol. All modules in the 7045 series offer 16 digital output channels, each of which features Photocouple isolation. The I-7045(D)/M-7045(D) supports sourcetype output, while the I-7045(D)-NPN/M-7045(D)-NPN supports sink-type, and both are equipped with short circuit protection. There are options to enable both power-on and safe values, and 16 LED indicators that can be used to monitor ..
770.80 zł
M-7045 CR M-7045 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: M-7045 CR
16-channel Isolated Digital Output Module using the DCON and Modbus Protocols. All modules in the 7045 series offer 16 digital output channels, each of which features Photocouple isolation. The I-7045(D)/M-7045(D) supports sourcetype output, while the I-7045(D)-NPN/M-7045(D)-NPN supports sink-type, and both are equipped with short circuit protection. There are options to enable both power-on and safe values, and 16 LED indicators that can be used..
770.80 zł
M-7045-NPN CR M-7045-NPN CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: M-7045-NPN CR
16-channel Isolated Digital Output Module using the DCON and Modbus Protocols. All modules in the 7045 series offer 16 digital output channels, each of which features Photocouple isolation. The I-7045(D)/M-7045(D) supports sourcetype output, while the I-7045(D)-NPN/M-7045(D)-NPN supports sink-type, and both are equipped with short circuit protection. There are options to enable both power-on and safe values, and 16 LED indicators that can be used..
770.80 zł
tGW-725 CR tGW-725 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: tGW-725 CR
Industrial Modbus TCP to RTU/ASCII Converter with PoE and 2 RS-485 Ports. The tGW-700 is a Modbus TCP to RTU/ASCII gateway that enables a Modbus/TCP host to communicate with serial Modbus RTU/ASCII devices through an Ethernet network, and eliminates the cable length limitation of legacy serial communication devices. The module can be used to create a pair-connection application (as well as serial-bridge or serial-tunnel application), and can then..
770.80 zł
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