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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.


NS-200FC CR NS-200FC CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: NS-200FC CR
Industrial Ethernet to Fiber Media Converter, Multi mode, SC connector. The NS-200F series is an Ethernet (10/100Base-TX) to Fiber Optic (100Base-FX) converter. The Ethernet supports 10/100M auto-negotiation feature and auto MDI/MDIX function. The NS-200F series operates at either half or full duplex mode. It contains "soft start" function with overload protection, high-low voltage protection. The width of the NS-200F series is just 32.30 mm, so ..
949.40 zł
ET-2255 CR ET-2255 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: ET-2255 CR
Ethernet I/O Module with 2 Ethernet Ports, 8 Digital Inputs (Wet/Dry Contact) and 8 Digital Outputs (Sink type). Providing various digital I/O functions, the ET-2255 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 availa..
954.10 zł
ET-2255U CR ET-2255U CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: ET-2255U CR
Ethernet I/O Module with 2 Ethernet Ports, 8 Digital Inputs (Wet/Dry Contact) and 8 Digital Outputs (Sink/Source type). Providing various digital I/O functions, the ET-2255/2255U 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 co..
954.10 zł
IPMC100-1GF-2GPOE(S)
6 year warranty Quantity discount 5-10 days
Brand: 3onedata Model: IPMC100-1GF-2GPOE(S)
Unmanaged Industrial PoE Media Converter with 1 Gigabit fiber port and 2 Gigabit PoE copper ports, Single-mode. IPMC100 series are 2/3-port full Gigabit unmanaged industrial PoE media converter. PoE power supply conforms to IEEE 802.3af/at protocol standard. This series include four types of products and provide Gigabit copper port, Gigabit fiber port, Gigabit SFP slot and Gigabit PoE copper port. It adopts DIN-Rail or wall mounting to meet the r..
959.18 zł
I-7061 CR I-7061 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-7061 CR
12-channel Power Relay Output Module with DCON Protocol. The 7061 series provides 12 power relay output channels and the 7067 series provides 7 signal relay output channels. There are options for configuring power-on and safe values. 4 kV ESD protection and 3750 VDC intra-module isolation are also provided to enhance the noise protection capabilities in industrial environment. The “D” versions of the 7061 series provide 12 LED indicators and the ..
963.50 zł
INKNXUNI001I200 - Universal IR gateway to KNX TP for infrared air conditioners with temperature and humidity sensors, 2 binary inputs INKNXUNI001I200 - Universal IR gateway to KNX TP for infrared air conditioners with temperature and humidity sensors, 2 binary inputs
3 year warranty Quantity discount 5-7 days
Brand: Intesis Model: INKNXUNI001I200
INKNXUNI001I200 – universal IR gateway to KNX TP for air conditioners, with temperature and humidity sensor, 2 binary inputs, bus powered from KNX, ETS configuration. The INKNXUNI001I200 by Intesis is a universal KNX TP gateway designed to integrate any air conditioner equipped with an infrared (IR) remote control into KNX building automation systems. It provides bidirectional communication between the AC indoor unit and the KNX networ..
963.50 zł
IS-IR-KNX-1I (INKNXUNI001I000) IS-IR-KNX-1I (INKNXUNI001I000)
3 year warranty Quantity discount 5-7 days
Brand: Intesis Model: IS-IR-KNX-1I
Universal IR Air Conditioner to KNX Interface. IntesisBox IS-IR-KNX-1 allows monitoring and control, of your Air Conditioner from KNX installations thorugh the standard IR receiver.The IS-IR-KNX-1I (INKNXUNI001I000) gateway allows the control of the main AC functions via infrared commands. But also, thanks to the IR receiver that the device is equipped with, it is possible to know the real status of the AC unit even the user is controlling it by ..
963.50 zł
SDM-8AI SDM-8AI
2-3 days
Brand: Aspar Model: SDM-8AI
Industrial expansion module, 8 universal analog inputs to Modbus RTU, with RS485 interface.Features:INPUT: 8 universal analog inputsOUTPUT: RS485 - Modbus Slave (ASCII, RTU)Operation of voltage inputs +10V, +-10VSupports current inputs +-20mA, 0-20mA, 4-20mAEach channel can be freely set to measure voltage or current with different measuring rangesTwo configurable NPN outputs up to 500mA, switched remotely or automatically when the specified valu..
963.50 zł
SDM-8AO SDM-8AO
2-3 days
Brand: Aspar Model: SDM-8AO
Industrial expansion module, 8 analog universal outputs on Modbus RTU, with RS485 interface. Features:OUTPUT: 8 universal analog outputsINPUT: RS485 - Modbus Slave (ASCII, RTU)Up to 128 modules on RS485 networkVoltage outputs support: 0 - 10VCurrent outputs support: 0-20mA, 4-20mAEach channel can be freely set as a voltage or current outputLEDs for signaling the status of the outputsLarge, convenient cable connectors (up to 2.5 mm2)1kV galvanic i..
963.50 zł
NP314T-4DI(RS-485) NP314T-4DI(RS-485)
Shipping 24h Test for Free! 6 year warranty Quantity discount
Brand: 3onedata Model: NP314T-4DI(RS-485)
Industrial Device Server with 4 RS-485 ports and 2 Ethernet ports. NP314T-4DI(RS-485) is an 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 4 port RS485 (RS-485 connector: RJ45) and 2 port 10/100Base-TX Ethernet, Support two IP addresses and two MAC addresses,can focus manage disperse serial device, master through n..
968.20 zł
ET-2261 CR ET-2261 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: ET-2261 CR
Ethernet I/O Module with 2-port Ethernet Switch and 10 Power Relay Outputs. Providing various digital I/O functions, the ET-2261 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 industrial el..
972.90 zł
ET-7066 CR ET-7066 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: ET-7066 CR
Ethernet I/O Module with 1 Ethernet Port and 8-ch PhotoMOS Relay. The ET-7066/PET-7066 provides 8 form A PhotoMOS relays. It features optical isolation for 3000 Vrms of transient overvoltage protection and doesn’t have channel-to-channel isolation. The power-on value and safe value of PhotoMOS relay are programmable. It can safely be used in applications where hazardous voltages are present. Features:Built-In Webserver: configuration, monitori..
972.90 zł
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