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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-7026 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: ET-7026 CR
Ethernet I/O Industrial Module with 1 Ethernet Port, 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 ..
1 593,30 zł
HD674-A003-E4V - Modbus Slave to TCP Master converter, IP65/IP67, RS485, RJ45, DIN mount, 4kV isolation, metal housing
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD674-A003-E4V
Industrial isolated Modbus Slave to Modbus TCP Master Converter, metal housing resistant to vibration and shock with triple 4kV isolation between Modbus Slave/Modbus TCP Master, Modbus Slave/power supply and Modbus TCP Master/power supply. Particularly suitable for installation in cars, trucks, trains, boats, in the industrial sector and in fragile environments. Thanks to its rugged metal housing, the HD674-A003-E4V is designed for high m..
1 598,00 zł
HD67405-E7V
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67405-E7V
Industrial isolated CAN Repeater, line extender, with filter data configurable. Metal housing resistant to vibration and shock with triple 4kV isolation between CAN ports and CAN/power supply, Connectors SuperSeal 1.5, IP65. Particularly suitable for installation in cars, trucks, trains, boats, in the industrial sector and in fragile environments.Two versions, one with a coating of the PCB (suffix code V) that ensures total protection to the dust..
1 598,00 zł
HD67411-E7V – CAN to Modbus Master converter, metal housing, IP65 SuperSeal 1.5 connectors HD67411-E7V – CAN to Modbus Master converter, metal housing, IP65 SuperSeal 1.5 connectors
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67411-E7V
Industrial CAN to Modbus Master converter, metal housing resistant to vibration and shock with triple 4kV isolation between CAN/Modbus Master, CAN/power supply and Modbus Master/power supply. The HD67411-E7V is particularly suitable for installation in cars, trucks, trains, boats, and industrial sectors where conditions are unstable and demanding. Thanks to its metal enclosure resistant to vibration and shock, combined with triple 4kV isol..
1 598,00 zł
HD67412-E7V - CAN to Modbus Slave SuperSeal IP65, SuperSeal 1.5 connectors, metal housing
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67412-E7V
Industrial CAN to Modbus Slave converter, metal housing resistant to vibration and shock with triple 4kV isolation between CAN/Modbus Slave, CAN/power supply and Modbus Slave/power supply, Connectors SuperSeal 1.5, IP65. Particularly suitable for installation in cars, trucks, trains, boats, in the industrial sector and in fragile environments. The HD67412-E7V combines high mechanical resistance with advanced electrical protection, maki..
1 598,00 zł
HD67421-E7V - CANopen to Modbus RTU Master converter, SuperSeal 1.5, IP65, metal housing
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67421-E7V
Industrial CANopen to Modbus RTU (RS485) master converter, SuperSeal 1.5 Connectors, varnished PCB, galvanic isolation 4000V. The HD67421-E7V is an advanced industrial gateway that converts CANopen protocol into Modbus RTU Master, ensuring seamless interoperability between automation systems. The device is housed in a rugged metal enclosure resistant to vibration and shock, designed for reliable operation in automotive, railway, marine, an..
1 598,00 zł
HD67422-E7V
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67422-E7V
Industrial CANopen to Modbus RTU (RS485) slave converter, SuperSeal 1.5 Connectors, varnished, galvanic isolation 4000V. Converter has metal housing, it's resistant to mechanical stress (such as vibration and shock) and has triple galvanic isolation 4000V between CANopen/RS485, CANopen/power supply, RS485/power supply.Configuration:Thanks to the SW67422 software on your PC you can:Define the list of SDOs and PDOs in reception/transmissionDefine t..
1 598,00 zł
NSM-200SX CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: NSM-200SX CR
Industrial 1000 Base-T to 1000 Base-SX Fiber Converter, Multi-mode 850 nm, 0.55 km, SC connector. ICP DAS's line of feature rich 10/100/1000 SFP Media Converters transparently connects copper to SFP for multimode or single mode fiber. Our 10/100/1000 Ethernet to Fiber Converters provide an economical path to extend the distance of an existing network, the life of non-fiber based equipment, or the distance between two devices. The pluggable fiber ..
1 598,00 zł
BMT-AI8
3 year warranty 5-10 days
Brand: Contemporary Controls Model: BMT-AI8
I/O BACnet MS/TP Module with 8 individually configurable resistance or voltage 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 8 individually configurable resistance or vo..
1 607,40 zł
GW1114-4DI(RS-485) GW1114-4DI(RS-485)
Shipping 24h Test for Free! 6 year warranty Quantity discount
Brand: 3onedata Model: GW1114-4DI(RS-485)
4 RS-485 + 2 100M Ethernet Ports Modbus Gateway GW1114-4DI(RS-485)-TB-P(12-48VDC) is Modbus gateway designed for integrating Modbus RTU/ASCII and Modbus TCP networks; it can achieve the conversion between Modbus RTU/ASCII and Modbus TCP protocols. This product supports 4 RS-485 serial ports to 2 10/100Base-T(X) self-adaptive Ethernet port. It adopts desktop/wall mounting to meet the requirements of different application scenes. Modbus gateway sup..
1 607,40 zł
I-7530A-MR CR I-7530A-MR CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-7530A-MR CR
Industrial Intelligent Modbus RTU to CAN Converter. The I-7530A-MR is designed to unleash the power of CAN bus via RS-232/485/422 communication method. It accurately converts messages between CAN and RS-232/485/422 networks. This module let you communicate with CAN devices easily from any PC or devices with RS-232/485/422 interface. The programmable RS-232/485/422 device (For example: PC, PLC or PAC) or Modbus RTU master device can use the serial..
1 607,40 zł
PET-7002 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: PET-7002 CR
Ethernet I/O Module with 1 Ethernet PoE port, 3-ch Analog Inputs, 6-ch Digital Inputs and 3-ch Relay. The ET-7002/PET-7002/ET-7202/PET-7202 is a multi-function module with 3-channel analog inputs, 6-channel digital inputs and 3-channel relay outputs. It provides various programmable analog inputs (+/-150 mV, +/-500 mV, +/-1 V, +/-5 V, +/-10 V, +/-20 mA, 0 ~ 20 mA and 4 ~ 20 mA).Each analog input is allowed to configure a proper range with 240 Vrm..
1 612,10 zł
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