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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.


I-7521 CR I-7521 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-7521 CR
Programmable Intelligent Communication Controller. 1x 5-wire RS-232 or 2-wire RS-485 port and 1x RS-485 port.Onboard 1 KB Queue bufferThe I-752N series module is equipped with a 1 KB queue buffer for its local RS-232 device. All input data can be stored in the queue buffer until the Host PC has time to read it. This feature allows the Host PC to link thousands of RS-232 devices without any loss of data.3000V isolation on RS-485 sideCOM2 of the I-..
972.90 zł
PET-7042 CR PET-7042 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: PET-7042 CR
Ethernet PoE I/O Module with 1 Ethernet PoE Port and 16 Digital Outputs. The ET-7042/PET-7042/ET-7242/PET-7242 provides 16 sink-type digital output channels. It features optical isolation for 3750 VDC of transient overvoltage protection and doesn’t have channel-to-channel isolation. The power-on value and safe value of digital output channel are programmable. In some industrial applications, the user can connect the output channel of ET-7042/PET-..
972.90 zł
PET-7044 CR PET-7044 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: PET-7044 CR
Ethernet PoE I/O Module with 1 Ethernet PoE Port, 8 Digital Inputs and 8 Digital Outputs. The ET-7044/PET-7044/ET-7244/PET-7244 provides 8 wet contact digital input channels and 8 sink-type digital output channels. It features optical isolation for 3750 Vrms of transient overvoltage protection but doesn’t provide channel-to-channel isolation. Each input channel can be used as a 32-bit counter and each output channel can drive 300 mA load. The pow..
972.90 zł
PET-7050 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: PET-7050 CR
Ethernet PoE I/O Module with 1 Ethernet PoE Port, 12-channel Digital Input, 6-channel Digital Output. The ET-7000/ET-7200 series provides full networking capabilities, and a variety of I/O functions, together with web based Ethernet I/O monitoring and control modules, meaning that the modules can be remotely controlled using the Modbus TCP/UDP protocol via an Ethernet network. This ensures that the ET-7000/ET-7200 series provides integration with..
972.90 zł
PET-7051 CR PET-7051 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: PET-7051 CR
Ethernet PoE I/O Module with 1 Ethernet PoE Port and 16 Digital Inputs. The ET-7051/PET-7051/ET-7251/PET-7251 provides 16 wet contact digital input channels. Each input channel can be used as a 32-bit counter. It features optical isolation for 3750 Vrms of transient overvoltage protection but doesn’t provide channel-to-channel isolation. It can safely be used in applications where hazardous voltages are present.Features:Built-In WebserverWeb HMIS..
972.90 zł
PET-7052 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: PET-7052 CR
Ethernet PoE I/O Module with 1 Ethernet PoE Port, 8 Digital Inputs and 8 Digital Outputs. The ET-7052/PET-7052/ET-7252/PET-7252 provides 8 wet contact digital input channels and 8 source-type digital output channels. It features optical isolation for 2500 VDC of transient overvoltage protection but doesn’t provide channel-to-channel isolation. Each input channel can be used as a 32-bit counter and each output channel can drive 650 mA load. The po..
972.90 zł
PET-7060 CR PET-7060 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: PET-7060 CR
Ethernet PoE I/O Module with 1 Ethernet PoE Port, 6 Relay Outputs and 6 Digital Inputs. The ET-7060/PET-7060/ET-7260/PET-7260 provides 6 wet contact digital input channels and 6 form A electromechanical relays. It features optical isolation for 3000 VDC of transient overvoltage protection and doesn’t have channel-to-channel isolation. Each input channel can be used as a 32-bit counter. The power-on value and safe value of relay are programmable.F..
972.90 zł
HD67648-A1-422
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67648-A1-422
Industrial Ethernet to RS422 converter with two Ethernet ports, housing type A (slim), DIN rail mount. HD67648 allows you create one or two independent ports 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 software on ..
977.60 zł
HD67648-A1-485
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67648-A1-485
Industrial Ethernet to RS485 converter with two Ethernet ports, housing type A (slim), DIN rail mount. HD67648 allows you create one or two independent ports RS485 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 software on ..
977.60 zł
BMT-DI4
3 year warranty 5-10 days
Brand: Contemporary Controls Model: BMT-DI4
I/O BACnet MS/TP Module with 4 digital inputs.For those installations that support a fieldbus solution such as BACnet MS/TP, Contemporary Controls provides solutions for expanding the number of I/O points in the field. These compact cost-effective modules are available with analog and digital inputs and outputs in varying combinations. The BACnet MS/TP module with 4 digital inputs was developed for decentralized switching tasks. It is suitable..
982.30 zł
ET-2242 CR ET-2242 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: ET-2242 CR
Ethernet I/O Module with 2 Ethernet Ports and 16 Open Collector Digital Outputs. Providing various digital I/O functions, the ET-2242 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 industr..
982.30 zł
WISE-7167 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: WISE-7167 CR
Ethernet PoE I/O Module with 1 Ethernet Port and 8 Power Relay Outputs. WISE-7167 follows IEEE 802.3af-compliant (classification, Class 1) Power over Ethernet (PoE) specification. It allows receiving power from PoE enabled network by Ethernet pairs (Category 5 Ethernet cable). This feature provides greater flexibility and higher efficiency therefore simplifying systems design, saving space, reducing cables and eliminating the requirement for dedi..
982.30 zł
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