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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.


HD67930-G43-B2 – Industrial Ethernet to MQTT Converter with LAN, LTE SIM and eSIM
New 2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67930-G43-B2
HD67930-G43-B2 Converter – advanced Ethernet to MQTT gateway with LAN, LTE SIM and eSIM connectivity. The HD67930-G43-B2 is an industrial Ethernet to MQTT converter designed for modern IoT and IIoT applications that require reliable data exchange between TCP/UDP-based devices and MQTT brokers or cloud platforms. Built in a robust Housing type B enclosure with DIN rail mounting and terminal block connectors, this model provides outstanding..
1 649,70 zł
I-87028CDW CR I-87028CDW CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-87028CDW CR
8-channel 12-bit Channel-to-Channel Isolated Current Output Module with Open-wire Detection. The I-87028CDW is an 8-channel current output module that features 3 kVDC channel-to-channel isolation and also features per-channel open wire detection for +4 to +20 mA outputs, together with 4 kV ESD protection as well as 3 kVDC intra-module isolation. Options for configuring power-on and safe values are also included.Features:3 kV Intra-module Isolatio..
1 649,70 zł
I-87028CW CR I-87028CW CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-87028CW CR
8-channel 12-bit Channel-to-Channel Isolated Current Output Module with Open-wire Detection. The I-87028CW is an 8-channel current output module that features channel-to- channel isolation and also has qualification for 4 KV ESD protection and 1000 VDC intra-module isolation. Options for configuring power-on and safe values are also included.Features:1 kV Channel-to-Channel IsolationOpen Wire Detection for Current OutputRF ImmunityShort Circuit P..
1 649,70 zł
MBus to modbus RTU converter, 40 meters - HD67029-B2-485-40 MBus to modbus RTU converter, 40 meters - HD67029-B2-485-40
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67029-B2-485-40
Industrial MBus to Modbus RTU converter, master MBus up to 40 slaves, modbus slave Port: RS485. The converter for communication with meters uses the MBus, RS-485 connector is used for Modbus RTU communication. The HD67029M-485-40 converter can read up to 40 MBus receivers of any type (eg water meters, gas meters, energy meters). Converter is easy to configure thanks to free SW67029 software.New converter functionality - automatic scan of MBus rec..
1 649,70 zł
PET-7215 CR PET-7215 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: PET-7215 CR
Ethernet PoE I/O Module with 2 Ethernet PoE Ports and 7-ch RTD Inputs. The ET-7015/PET-7015/ET-7215/PET-7215 is specifically designed for long-distance RTD measurement. It features automatic compensation for three-wire RTD regardless of the length of wires and provides open wire detection for RTD measurement. The ET-7015/PET-7015/ET-7215/PET-7215 offers 7 channels, each of which could be connected with different kinds of RTD (Pt100, Pt1000, Ni120..
1 659,10 zł
NP3008T-8DI(RS-485)
6 year warranty Quantity discount 5-10 days
Brand: 3onedata Model: NP3008T-8DI(RS-485)
Industrial Serial Port Server with 8 RS-485/422 ports and 1 Ethernet port. NP3008T-8DI(RS-485) is a high performance, industrial grade serial to Ethernet server, it can satisfy some kinds of customer requirements in consumption, temperature, volume and handle ability. It provides 8 port RS-485/422 (connector: 5 bit terminal block) and 1 port 10/100Base-Tx Ethernet, can focus manage disperse serial device, master through network, easy, convenience..
1 663,80 zł
CAN-2018C CR CAN-2018C CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: CAN-2018C CR
CANopen Slave Module with 8 Thermocouple Inputs. Include CAN-2018C module and a CN-1824 daughter board. CAN-2018C/S module follows the DS-301 version 4.02 and DSP-401 version 2.1. You can access the thermocouple input status and set the configuration by using standard CANopen protocol. CAN-2018C/S has passed the validation of the CiA CANopen Conformance Test tool. Therefore, you can use it with standard CANopen master easily by applying the EDS f..
1 673,20 zł
CAN-2018D CR CAN-2018D CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: CAN-2018D CR
DeviceNet Slave Module with 8-channel Thermocouple Input. Include CAN-2018D module and a CN-1824 daughter board. DeviceNet is one kind of the network protocols based on the CAN bus and mainly used for the embedded network of the machine control, such as industrial machine control , aircraft engines monitoring, factory automation, medical equipments control, remote data acquisition, environmental monitoring, and packaging machines control, etc.The..
1 673,20 zł
I-7540D CR I-7540D CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-7540D CR
Industrial Intelligent CAN to Ethernet Converter. The I-7540D is a CAN to Ethernet converter, and is usually applied as an Ethernet to CAN/RS-232/485 Device Server. It supports socket access functions and virtual COM port technology which helps users to get the CAN, RS-232, RS-485 data via virtual COM port.The I-7540D also provides transparent mode, which enables CAN networks to be coupled together over the Internet/Ethernet, whereby remote monit..
1 677,90 zł
ET-7226 CR ET-7226 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: ET-7226 CR
Ethernet I/O Module with 2 Ethernet Ports, 6 Analog Inputs, 2 Analog Outputs, 2 Digital Inputs and 2 Digital Outputs. The ET-7026/PET-7026/ET-7226/PET-7226 is a multi-function module with 6-channel analog inputs, 2-channel analog outputs, 2-channel digital inputs and 2-channel digital outputs. It provides various programmable analog inputs (+/-500 mV, +/-1 V, +/-5 V, +/-10 V, +/-20 mA, 0 ~ 20 mA and 4 ~ 20 mA), and analog outputs (+/-5 V, +/-10 V..
1 692,00 zł
I-87028UW CR I-87028UW CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-87028UW CR
8-channel 16-bit Isolated Source Type Voltage or Current Output Module. The I-87028UW is a source type analog output module that includes 8 single-ended analog output channels, and allows a programmable output range on all analog outputs channels(0 ~ 5 V, +/-5 V, 0 ~ 10 V, +/-10 V, +4 ~ +20 mA or 0 ~ +20 mA). Each analog output channel can be configured for an individual range and provides an RF immunity level matching that defined by the IEC 610..
1 692,00 zł
I-87028VW CR I-87028VW CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-87028VW CR
8-channel 12-bit Channel-to-Channel Isolated Voltage Output Module. The I-87028VW and I-87028VW-20V are 8-channel voltage output modules that feature 2000 VDC channel-to-channel isolation, and provides for 4 KV ESD protection and 2000 VDC intra-module isolation. Options for configuring power-on and safe values are also included.Features:8-channel Voltage Output2 kV Channel-to-Channel IsolationRF ImmunityShort Circuit ProtectionConfigurable Power-..
1 692,00 zł
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