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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.


ET-2242U CR ET-2242U CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: ET-2242U CR
Ethernet I/O Module with 2 Ethernet Ports and 16 Sink/Source-type Digital Outputs. Providing various digital I/O functions, the ET-2242/2242U module is an IP-based Ethernet I/O monitoring and control module. The module can be remotely controlled through a 10/100 M Ethernet network by using Modbus TCP/UDP protocol. Modbus has become a de facto standard communications protocol in industry, and is now the most commonly available means of connecting..
1 019,90 zł
ET-2268 CR ET-2268 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: ET-2268 CR
Ethernet I/O Module with 2-port Ethernet Switch, 4-ch Form A Relay Output and 4-ch Form C Relay Output. The ET-2268 provides 4 Form A signal Relay output and 4 Form C signal Relay Output channels. With 2 Ethernet ports, The ET-2268 allows daisy chain connection which permits the flexibility in locating devices, eases installation and lowers infrastructure costs. This module include 8 LED indicators that can be used to monitor the Relay Output sta..
1 019,90 zł
HD67046-B2 HD67046-B2
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67046-B2
Industrial DMX to RS485 converter, housing type B (wide), DIN rail mount. The HD67046-B2 is a DMX to Serial Converter and it allows you to connect some DMX devices (for example a Light System...) with a Serial network in order to exchange the informations between the networks.Specifications:Ports: 2xRS485; 1xEthernetSerial protocol: Serial RS485DMX protocol: DMX512Data Rates RS485: Up to 115200 bpsData Rates DMX: 250 kbpsRS485 connector: 3way 5mm..
1 029,30 zł
HD67075-A1 - Modbus RTU to Modbus ASCII Converter, housing type A (slim), DIN rail mount
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67075-A1
Modbus RTU to Modbus ASCII Converter, Housing type: A (slim), DIN rail mount. The HD67075-A1 Modbus RTU to Modbus ASCII converter is a compact industrial gateway designed to ensure seamless communication between devices operating on two different Modbus standards. By supporting both Master and Slave modes on each side, it offers exceptional flexibility for system integrators who need to connect legacy Modbus ASCII devices with modern ..
1 029,30 zł
HD67149-B2
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67149-B2
Isolated RS-485 signal repeater, housing type B, 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 medium...
1 029,30 zł
HD67506-A1
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67506-A1
Industrial Modbus Master to Ethernet converter, housing type: A (slim), DIN rail mounting. HD67506-A1 allows you to connect some Modbus Slave devices with an Ethernet net (for example a PC, Supervisory System) in order to exchange the informations between the networks. Converter is easy to configure thanks to free SW67506 software.Configuration:Thanks to the SW67506 software on your PC you can:Define the parameters for the Modbus busDefine the pa..
1 029,30 zł
HD67506-B2 HD67506-B2
Shipping 24h Test for Free! 2 year warranty Quantity discount
Brand: ADF Web Model: HD67506-B2
Industrial Modbus Master to Ethernet converter, housing type:B, DIN rail mounting. HD67506 allows you to connect some Modbus Slave devices with an Ethernet net (for example a PC, Supervisory System) in order to exchange the informations between the networks.Features:Triple isolation between Serial - Power Supply, Serial - Ethernet, Power Supply - EthernetEthernet 10Base-T / 100Base-T, autosensingMountable on 35mm Rail DINWide power supply input r..
1 029,30 zł
HD67507-A1 - Modbus TCP slave to Modbus RTU master converter, up to 240 RTU devices, 10 TCP connections, DIN rail, RS232/RS485, housing type A HD67507-A1 - Modbus TCP slave to Modbus RTU master converter, up to 240 RTU devices, 10 TCP connections, DIN rail, RS232/RS485, housing type A
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67507-A1
Industrial Modbus TCP slave to Modbus RTU master converter, housing type A (slim), DIN rail mount. On Modbus RTU side you can connect up to 240 devices on one HD67507 Converter. Product Overview The HD67507-A1 is a high-performance industrial converter designed to ensure seamless communication between Modbus TCP masters and Modbus RTU slaves. Acting as a Modbus TCP slave on the Ethernet side and as a Modbus RTU master on the serial si..
1 029,30 zł
HD67507-A1-422 - Modbus TCP Slave to Modbus RTU Master Converter, supports 240 devices RTU, 10 TCP connections, RS232/RS422, DIN rail, housing type A
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67507-A1-422
Industrial Modbus TCP slave to Modbus RTU master converter, housing type A (slim), DIN rail mount. On Modbus RTU side you can connect up to 240 devices on one HD67507 Converter. The HD67507-A1-422 is a compact and reliable industrial Modbus gateway designed to integrate Modbus TCP networks with Modbus RTU devices. Operating as a slave on the TCP side and as a master on the RTU side, it allows seamless communication between supervisory systems ..
1 029,30 zł
HD67507-B2 - Modbus TCP to Modbus RTU converter, up to 240 devices, DIN rail housing B, housing type B HD67507-B2 - Modbus TCP to Modbus RTU converter, up to 240 devices, DIN rail housing B, housing type B
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67507-B2
Industrial Modbus TCP slave to Modbus RTU master converter, housing type B, DIN rail mount. On Modbus RTU side you can connect up to 240 devices on one HD67507 Converter. The HD67507-B2 Modbus converter is a reliable industrial solution designed to integrate Modbus TCP master devices with one or more Modbus RTU slaves. Thanks to its DIN rail housing type B, the device is well-suited for installation inside control cabinets, ensuring secure..
1 029,30 zł
HD67648-A1-232-422
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67648-A1-232-422
Industrial Ethernet to Serial Converter, housing type A (slim), DIN rail mount. >HD67648-232-422-A1 allows you to create one or two independents ports RS232 / RS485 / RS422 through the Ethernet (RJ45) connection. Important in this type of product is the installation of 2 LAN ports (RJ45) that can extend an Ethernet line without using the switch. Converter is easy to configure thanks to free SW67648 software.Configuration:Thanks to the SW67648 ..
1 029,30 zł
HD67648-A1-232-485
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67648-A1-232-485
Industrial Ethernet to Serial Converter, housing type A (slim), DIN rail mount. HD67648-232-485-A1 allows you to create one or two independents ports RS232 / RS485 / RS422 through the Ethernet (RJ45) connection. Important in this type of product is the installation of 2 LAN ports (RJ45) that can extend an Ethernet line without using the switch. Converter is easy to configure thanks to free SW67648 software.Configuration:Thanks to the SW67648 sof..
1 029,30 zł
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