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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.


tM-R5 CR tM-R5 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: tM-R5 CR
5-channel Relay Output Module.The tM-R5 provides 5 channels for relay output. All output channels are Form A type relays and there are options for configuring power-on and safe digital output values. 4 kV ESD protection and 3750 VDC intra-module isolation are also provided.Features:Modbus RTU and DCON Protocols5-channels relay outputs (Form A type)Max load current: 5A/channel @ 30VDC or 250 VAC±4 kV ESD and ±2 kV EFD protection3750 VDC isolationV..
470,00 zł
I-7560U CR I-7560U CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-7560U CR
Industrial USB to RS-232 Converter. The I-7560/I-7560U provides a Windows serial COM port via it's USB connection and is compatible with new and legacy RS-232 devices. USB Plug-and-Play allows easy serial port expansion and requires no IRQ, DMA, or I/O port settings manually.It also features a full set of RS-232 modem data and control signals (TxD, RxD, RTS, CTS, DSR, DTR, DCD, RI and GND) on it's PC compatible DB-9 male connector. It also featur..
474,70 zł
IMC100-1T1F(S)
6 year warranty Quantity discount 5-10 days
Brand: 3onedata Model: IMC100-1T1F(S)
Industrial media converter, Ethernet to fiber, DIN rail mount, working temperature -40°C to 75°C. 5 years manufacturer's warranty. 1 port 10/100Base-T(X) and 1 port 100Base-FX, Single-mode, SC/ST DC12~48V. IMC100 series are unmanaged industrial media converters. This series have 14 productsand support a variety of optional interfaces including 100M fiber ports, 100M copper ports,Gigabit fiber ports, Gigabit copper ports and Gigabit SFP. They adop..
493,50 zł
HD67119
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67119
Industrial optoisolated (2000V) USB (type B) to RS-485 converter (3-way terminal block), power supply through USB port, housing type B (wide), DIN rail mount. The USB/RS485 converter is a cost-effective device for transfer serial data over USB. Connecting to a USB port on a computer or USB hub, this device instantly add serial communication ports to your system. By plugging the device into the USB port, it is automatically detected and installed...
512,30 zł
MBus to RS-232 converter, max 3 meters - HD67020-B2-3 MBus to RS-232 converter, max 3 meters - HD67020-B2-3
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67020-B2-3
MBus to RS-232 converter (Master MBus: up to 3 slaves), housing type B (wide), DIN rail mount. This series allow to read/write M-Bus Slaves devices by RS232, ensuring galvanic isolation between M-Bus and RS232. HD67020 is a Plug&Play device and it allows to connect up to 3 M-Bus Slaves to RS232. The converter does not require any configuration. The baudrate is automatically detected at RS232 side and used (the same) to the M-Bus side.Characte..
512,30 zł
IMC100-2T1F(M)
6 year warranty Quantity discount 5-10 days
Brand: 3onedata Model: IMC100-2T1F(M)
2-port 10/100Base-T(X)+1-port 100Base-FX, Multi-mode. IMC100 series are unmanaged industrial media converters. This series have 14 productsand support a variety of optional interfaces including 100M fiber ports, 100M copper ports,Gigabit fiber ports, Gigabit copper ports and Gigabit SFP. They adopt DIN-Rail mounting tomeet the requirements of different application scenes. Product supports optional AC/DC power supply. The DIP switch could implem..
517,00 zł
NP302T-2D(RS-485) NP302T-2D(RS-485)
Shipping 24h Test for Free! 6 year warranty Quantity discount
Brand: 3onedata Model: NP302T-2D(RS-485)
Industrial, 2-port RS-422/485 serial device server with one Ethernet port. High performance, industrial grade 2-port serial to Ethernet server, it can satisfy some kinds of customer requirements in consumption, temperature, volume and handle ability. It provides 2 port RS-485/422 (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. In ap..
519,44 zł
tM-7520U CR tM-7520U CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: tM-7520U CR
Industrial Isolated RS-232 to RS-485 Converter. The tM-7510U repeater simply amplifies, or boosts, existing RS-485 signals to enable them to cover longer distances. It extends the communication distance by 4000 ft. (1200 m) or increases the maximum number of bus nodes. The module provides 2500 VDC of isolation allowing you to separate and protect critical segments of the system from the rest of the RS- 485 network.The tM-7510U provides 2 modes of..
526,40 zł
tM-DA1P1R1 CR tM-DA1P1R1 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: tM-DA1P1R1 CR
1-channel Isolated Analog Output, 1-channel Isolated Digital Input and 1-channel Relay Output Module.The tM-DA1P1R1 is an RS-485 Interface module that offers 1 analog output channel, 1 digital input channel and 1 relay output channel. Analog output resolution is 12-bit with an output range of 0~10V and 0~20mA. The Digital input channel is dry contact type and provides a 16-bit counter function. The Relay output type is a Form C, and all I/O termi..
526,40 zł
I-7520 - RS-232 to RS-485 isolated converter I-7520 - RS-232 to RS-485 isolated converter
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-7520 CR
Industrial Isolated RS-232 to RS-485 Converter.  The I-7520 is an advanced isolated RS-232 to RS-485 converter that enables reliable and stable communication between devices in industrial automation, SCADA systems, and smart buildings. This device eliminates the limitations of the RS-232 standard, allowing communication over distances up to 1200 m and enabling multiple device connections on an RS-485 network. With 3000 VDC galvan..
535,80 zł
I-87052W CR I-87052W CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-87052W CR
8-channel Isolated Digital Input Module with 2 kV Channel-to-Channel Isolation using the DCON Protocol. The I-87052W module offers 8 fully independent differential Digital Input channels that feature 2 kV channel-to-channel Photocouple isolation. In addition, either sink- or source-type input can be selected via the wire connections, while all channels are able to be used as 16-bit counters. The I-87052W also includes 8 LED indicators that can be..
535,80 zł
I-87058W CR I-87058W CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-87058W CR
8-channel 80 to 250 VAC Isolated Digital Input Module with 16-bit Counters. The I-87058W is an 8-channel AC digital input module with high voltage isolation. The ON voltage level for the module range can be between 80 and 250 VAC, and all DI channels are also able to be used as 16-bit counters. The I-87059W is an 8-channel AC digital input module with high voltage isolation. The ON voltage level for the module range can be between 10 and 80 VAC, ..
535,80 zł
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